28311080

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{101111}}^1$

素因数の和:101129

約数の個数: 32

約数和(自身を含む): 72800640

約数和(自身を除く): 44489560

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 101111, 202222, 404444, 505555, 707777, 808888, 1011110, 1415554, 2022220, 2831108, 3538885, 4044440, 5662216, 7077770, 14155540, 28311080]

約数ペア:

[(1, 28311080), (2, 14155540), (4, 7077770), (5, 5662216), (7, 4044440), (8, 3538885), (10, 2831108), (14, 2022220), (20, 1415554), (28, 1011110), (35, 808888), (40, 707777), (56, 505555), (70, 404444), (140, 202222), (280, 101111)]