18111640

素因数分解:

$2^3\times 5^1\times {\mathrm{113}}^1\times {\mathrm{4007}}^1$

素因数の和:4131

約数の個数: 32

約数和(自身を含む): 41122080

約数和(自身を除く): 23010440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 113, 226, 452, 565, 904, 1130, 2260, 4007, 4520, 8014, 16028, 20035, 32056, 40070, 80140, 160280, 452791, 905582, 1811164, 2263955, 3622328, 4527910, 9055820, 18111640]

約数ペア:

[(1, 18111640), (2, 9055820), (4, 4527910), (5, 3622328), (8, 2263955), (10, 1811164), (20, 905582), (40, 452791), (113, 160280), (226, 80140), (452, 40070), (565, 32056), (904, 20035), (1130, 16028), (2260, 8014), (4007, 4520)]