20906665

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{8693}}^1$

素因数の和:8748

約数の個数: 16

約数和(自身を含む): 27751248

約数和(自身を除く): 6844583

約数列:

[1, 5, 13, 37, 65, 185, 481, 2405, 8693, 43465, 113009, 321641, 565045, 1608205, 4181333, 20906665]

約数ペア:

[(1, 20906665), (5, 4181333), (13, 1608205), (37, 565045), (65, 321641), (185, 113009), (481, 43465), (2405, 8693)]