20311850

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{31249}}^1$

素因数の和:31274

約数の個数: 24

約数和(自身を含む): 40687500

約数和(自身を除く): 20375650

約数列:

[1, 2, 5, 10, 13, 25, 26, 50, 65, 130, 325, 650, 31249, 62498, 156245, 312490, 406237, 781225, 812474, 1562450, 2031185, 4062370, 10155925, 20311850]

約数ペア:

[(1, 20311850), (2, 10155925), (5, 4062370), (10, 2031185), (13, 1562450), (25, 812474), (26, 781225), (50, 406237), (65, 312490), (130, 156245), (325, 62498), (650, 31249)]