218637620

素因数分解:

$2^2\times 5^1\times {\mathrm{2861}}^1\times {\mathrm{3821}}^1$

素因数の和:6691

約数の個数: 24

約数和(自身を含む): 459419688

約数和(自身を除く): 240782068

約数列:

[1, 2, 4, 5, 10, 20, 2861, 3821, 5722, 7642, 11444, 14305, 15284, 19105, 28610, 38210, 57220, 76420, 10931881, 21863762, 43727524, 54659405, 109318810, 218637620]

約数ペア:

[(1, 218637620), (2, 109318810), (4, 54659405), (5, 43727524), (10, 21863762), (20, 10931881), (2861, 76420), (3821, 57220), (5722, 38210), (7642, 28610), (11444, 19105), (14305, 15284)]