398261180

素因数分解:

$2^2\times 5^1\times {\mathrm{101}}^1\times {\mathrm{197159}}^1$

素因数の和:197269

約数の個数: 24

約数和(自身を含む): 844633440

約数和(自身を除く): 446372260

約数列:

[1, 2, 4, 5, 10, 20, 101, 202, 404, 505, 1010, 2020, 197159, 394318, 788636, 985795, 1971590, 3943180, 19913059, 39826118, 79652236, 99565295, 199130590, 398261180]

約数ペア:

[(1, 398261180), (2, 199130590), (4, 99565295), (5, 79652236), (10, 39826118), (20, 19913059), (101, 3943180), (202, 1971590), (404, 985795), (505, 788636), (1010, 394318), (2020, 197159)]