81889100

素因数分解:

$2^2\times 5^2\times {\mathrm{211}}^1\times {\mathrm{3881}}^1$

素因数の和:4106

約数の個数: 36

約数和(自身を含む): 178587528

約数和(自身を除く): 96698428

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 211, 422, 844, 1055, 2110, 3881, 4220, 5275, 7762, 10550, 15524, 19405, 21100, 38810, 77620, 97025, 194050, 388100, 818891, 1637782, 3275564, 4094455, 8188910, 16377820, 20472275, 40944550, 81889100]

約数ペア:

[(1, 81889100), (2, 40944550), (4, 20472275), (5, 16377820), (10, 8188910), (20, 4094455), (25, 3275564), (50, 1637782), (100, 818891), (211, 388100), (422, 194050), (844, 97025), (1055, 77620), (2110, 38810), (3881, 21100), (4220, 19405), (5275, 15524), (7762, 10550)]