20436225

素因数分解:

$3^1\times 5^2\times {\mathrm{521}}^1\times {\mathrm{523}}^1$

素因数の和:1057

約数の個数: 24

約数和(自身を含む): 33917472

約数和(自身を除く): 13481247

約数列:

[1, 3, 5, 15, 25, 75, 521, 523, 1563, 1569, 2605, 2615, 7815, 7845, 13025, 13075, 39075, 39225, 272483, 817449, 1362415, 4087245, 6812075, 20436225]

約数ペア:

[(1, 20436225), (3, 6812075), (5, 4087245), (15, 1362415), (25, 817449), (75, 272483), (521, 39225), (523, 39075), (1563, 13075), (1569, 13025), (2605, 7845), (2615, 7815)]