90428270

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{211}}^1\times {\mathrm{2521}}^1$

素因数の和:2756

約数の個数: 32

約数和(自身を含む): 173231136

約数和(自身を除く): 82802866

約数列:

[1, 2, 5, 10, 17, 34, 85, 170, 211, 422, 1055, 2110, 2521, 3587, 5042, 7174, 12605, 17935, 25210, 35870, 42857, 85714, 214285, 428570, 531931, 1063862, 2659655, 5319310, 9042827, 18085654, 45214135, 90428270]

約数ペア:

[(1, 90428270), (2, 45214135), (5, 18085654), (10, 9042827), (17, 5319310), (34, 2659655), (85, 1063862), (170, 531931), (211, 428570), (422, 214285), (1055, 85714), (2110, 42857), (2521, 35870), (3587, 25210), (5042, 17935), (7174, 12605)]