Factors & Trailing Zeros
Factors और Trailing Zeros
title
Factors & Trailing Zeros
- Number System
- Factors & Trailing Zeros
नमस्ते दोस्तों, कैसे हैं आप सब? चलिए आज की class शुरू करते हैं। आज हम सीखेंगे — Factors और Trailing Zeros। मैं promise करती हूँ, आज के बाद ये topic आपको आसान लगेगा। शुरू करें?
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Interactive — learn by doing. Drag, tap and explore to build the intuition.
Count factors without listing them
Break N into primes; each prime power p^e offers (e+1) choices, so the factor count is the product of (e+1).
72 =23 × 32
(3+1) × (2+1)
12 factors
They are: 1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72
💡 A perfect square always has an ODD factor count — its middle factor (the root) isn't paired.