21617360

素因数分解:

$2^4\times 5^1\times {\mathrm{270217}}^1$

素因数の和:270230

約数の個数: 20

約数和(自身を含む): 50260548

約数和(自身を除く): 28643188

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 270217, 540434, 1080868, 1351085, 2161736, 2702170, 4323472, 5404340, 10808680, 21617360]

約数ペア:

[(1, 21617360), (2, 10808680), (4, 5404340), (5, 4323472), (8, 2702170), (10, 2161736), (16, 1351085), (20, 1080868), (40, 540434), (80, 270217)]