19131640

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{43481}}^1$

素因数の和:43503

約数の個数: 32

約数和(自身を含む): 46960560

約数和(自身を除く): 27828920

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 43481, 86962, 173924, 217405, 347848, 434810, 478291, 869620, 956582, 1739240, 1913164, 2391455, 3826328, 4782910, 9565820, 19131640]

約数ペア:

[(1, 19131640), (2, 9565820), (4, 4782910), (5, 3826328), (8, 2391455), (10, 1913164), (11, 1739240), (20, 956582), (22, 869620), (40, 478291), (44, 434810), (55, 347848), (88, 217405), (110, 173924), (220, 86962), (440, 43481)]