21816860

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{83911}}^1$

素因数の和:83933

約数の個数: 24

約数和(自身を含む): 49340256

約数和(自身を除く): 27523396

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 83911, 167822, 335644, 419555, 839110, 1090843, 1678220, 2181686, 4363372, 5454215, 10908430, 21816860]

約数ペア:

[(1, 21816860), (2, 10908430), (4, 5454215), (5, 4363372), (10, 2181686), (13, 1678220), (20, 1090843), (26, 839110), (52, 419555), (65, 335644), (130, 167822), (260, 83911)]