221785820

素因数分解:

$2^2\times 5^1\times {\mathrm{1549}}^1\times {\mathrm{7159}}^1$

素因数の和:8717

約数の個数: 24

約数和(自身を含む): 466116000

約数和(自身を除く): 244330180

約数列:

[1, 2, 4, 5, 10, 20, 1549, 3098, 6196, 7159, 7745, 14318, 15490, 28636, 30980, 35795, 71590, 143180, 11089291, 22178582, 44357164, 55446455, 110892910, 221785820]

約数ペア:

[(1, 221785820), (2, 110892910), (4, 55446455), (5, 44357164), (10, 22178582), (20, 11089291), (1549, 143180), (3098, 71590), (6196, 35795), (7159, 30980), (7745, 28636), (14318, 15490)]