18211820

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{82781}}^1$

素因数の和:82801

約数の個数: 24

約数和(自身を含む): 41722128

約数和(自身を除く): 23510308

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 82781, 165562, 331124, 413905, 827810, 910591, 1655620, 1821182, 3642364, 4552955, 9105910, 18211820]

約数ペア:

[(1, 18211820), (2, 9105910), (4, 4552955), (5, 3642364), (10, 1821182), (11, 1655620), (20, 910591), (22, 827810), (44, 413905), (55, 331124), (110, 165562), (220, 82781)]