91381240

素因数分解:

$2^3\times 5^1\times {\mathrm{109}}^1\times {\mathrm{20959}}^1$

素因数の和:21079

約数の個数: 32

約数和(自身を含む): 207504000

約数和(自身を除く): 116122760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 109, 218, 436, 545, 872, 1090, 2180, 4360, 20959, 41918, 83836, 104795, 167672, 209590, 419180, 838360, 2284531, 4569062, 9138124, 11422655, 18276248, 22845310, 45690620, 91381240]

約数ペア:

[(1, 91381240), (2, 45690620), (4, 22845310), (5, 18276248), (8, 11422655), (10, 9138124), (20, 4569062), (40, 2284531), (109, 838360), (218, 419180), (436, 209590), (545, 167672), (872, 104795), (1090, 83836), (2180, 41918), (4360, 20959)]