20405870

素因数分解:

$2^1\times 5^1\times {\mathrm{37}}^1\times {\mathrm{131}}^1\times {\mathrm{421}}^1$

素因数の和:596

約数の個数: 32

約数和(自身を含む): 38101536

約数和(自身を除く): 17695666

約数列:

[1, 2, 5, 10, 37, 74, 131, 185, 262, 370, 421, 655, 842, 1310, 2105, 4210, 4847, 9694, 15577, 24235, 31154, 48470, 55151, 77885, 110302, 155770, 275755, 551510, 2040587, 4081174, 10202935, 20405870]

約数ペア:

[(1, 20405870), (2, 10202935), (5, 4081174), (10, 2040587), (37, 551510), (74, 275755), (131, 155770), (185, 110302), (262, 77885), (370, 55151), (421, 48470), (655, 31154), (842, 24235), (1310, 15577), (2105, 9694), (4210, 4847)]