1990198090

素因数分解:

$2^1\times 5^1\times {\mathrm{409}}^1\times {\mathrm{486601}}^1$

素因数の和:487017

約数の個数: 16

約数和(自身を含む): 3591122760

約数和(自身を除く): 1600924670

約数列:

[1, 2, 5, 10, 409, 818, 2045, 4090, 486601, 973202, 2433005, 4866010, 199019809, 398039618, 995099045, 1990198090]

約数ペア:

[(1, 1990198090), (2, 995099045), (5, 398039618), (10, 199019809), (409, 4866010), (818, 2433005), (2045, 973202), (4090, 486601)]