20497495

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{151}}^1\times {\mathrm{1597}}^1$

素因数の和:1770

約数の個数: 16

約数和(自身を含む): 26232768

約数和(自身を除く): 5735273

約数列:

[1, 5, 17, 85, 151, 755, 1597, 2567, 7985, 12835, 27149, 135745, 241147, 1205735, 4099499, 20497495]

約数ペア:

[(1, 20497495), (5, 4099499), (17, 1205735), (85, 241147), (151, 135745), (755, 27149), (1597, 12835), (2567, 7985)]