18710380

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{71963}}^1$

素因数の和:71985

約数の個数: 24

約数和(自身を含む): 42314832

約数和(自身を除く): 23604452

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 71963, 143926, 287852, 359815, 719630, 935519, 1439260, 1871038, 3742076, 4677595, 9355190, 18710380]

約数ペア:

[(1, 18710380), (2, 9355190), (4, 4677595), (5, 3742076), (10, 1871038), (13, 1439260), (20, 935519), (26, 719630), (52, 359815), (65, 287852), (130, 143926), (260, 71963)]