12785200

素因数分解:

$2^4\times 5^2\times {\mathrm{31963}}^1$

素因数の和:31981

約数の個数: 30

約数和(自身を含む): 30717404

約数和(自身を除く): 17932204

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 31963, 63926, 127852, 159815, 255704, 319630, 511408, 639260, 799075, 1278520, 1598150, 2557040, 3196300, 6392600, 12785200]

約数ペア:

[(1, 12785200), (2, 6392600), (4, 3196300), (5, 2557040), (8, 1598150), (10, 1278520), (16, 799075), (20, 639260), (25, 511408), (40, 319630), (50, 255704), (80, 159815), (100, 127852), (200, 63926), (400, 31963)]