18165880

素因数分解:

$2^3\times 5^1\times {\mathrm{113}}^1\times {\mathrm{4019}}^1$

素因数の和:4143

約数の個数: 32

約数和(自身を含む): 41245200

約数和(自身を除く): 23079320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 113, 226, 452, 565, 904, 1130, 2260, 4019, 4520, 8038, 16076, 20095, 32152, 40190, 80380, 160760, 454147, 908294, 1816588, 2270735, 3633176, 4541470, 9082940, 18165880]

約数ペア:

[(1, 18165880), (2, 9082940), (4, 4541470), (5, 3633176), (8, 2270735), (10, 1816588), (20, 908294), (40, 454147), (113, 160760), (226, 80380), (452, 40190), (565, 32152), (904, 20095), (1130, 16076), (2260, 8038), (4019, 4520)]