18139790

素因数分解:

$2^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{71}}^1\times {\mathrm{881}}^1$

素因数の和:988

約数の個数: 32

約数和(自身を含む): 34292160

約数和(自身を除く): 16152370

約数列:

[1, 2, 5, 10, 29, 58, 71, 142, 145, 290, 355, 710, 881, 1762, 2059, 4118, 4405, 8810, 10295, 20590, 25549, 51098, 62551, 125102, 127745, 255490, 312755, 625510, 1813979, 3627958, 9069895, 18139790]

約数ペア:

[(1, 18139790), (2, 9069895), (5, 3627958), (10, 1813979), (29, 625510), (58, 312755), (71, 255490), (142, 127745), (145, 125102), (290, 62551), (355, 51098), (710, 25549), (881, 20590), (1762, 10295), (2059, 8810), (4118, 4405)]