80409100

素因数分解:

$2^2\times 5^2\times {\mathrm{804091}}^1$

素因数の和:804105

約数の個数: 18

約数和(自身を含む): 174487964

約数和(自身を除く): 94078864

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 804091, 1608182, 3216364, 4020455, 8040910, 16081820, 20102275, 40204550, 80409100]

約数ペア:

[(1, 80409100), (2, 40204550), (4, 20102275), (5, 16081820), (10, 8040910), (20, 4020455), (25, 3216364), (50, 1608182), (100, 804091)]