18423640

素因数分解:

$2^3\times 5^1\times {\mathrm{311}}^1\times {\mathrm{1481}}^1$

素因数の和:1803

約数の個数: 32

約数和(自身を含む): 41614560

約数和(自身を除く): 23190920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 311, 622, 1244, 1481, 1555, 2488, 2962, 3110, 5924, 6220, 7405, 11848, 12440, 14810, 29620, 59240, 460591, 921182, 1842364, 2302955, 3684728, 4605910, 9211820, 18423640]

約数ペア:

[(1, 18423640), (2, 9211820), (4, 4605910), (5, 3684728), (8, 2302955), (10, 1842364), (20, 921182), (40, 460591), (311, 59240), (622, 29620), (1244, 14810), (1481, 12440), (1555, 11848), (2488, 7405), (2962, 6220), (3110, 5924)]