218595980

素因数分解:

$2^2\times 5^1\times {\mathrm{2351}}^1\times {\mathrm{4649}}^1$

素因数の和:7009

約数の個数: 24

約数和(自身を含む): 459345600

約数和(自身を除く): 240749620

約数列:

[1, 2, 4, 5, 10, 20, 2351, 4649, 4702, 9298, 9404, 11755, 18596, 23245, 23510, 46490, 47020, 92980, 10929799, 21859598, 43719196, 54648995, 109297990, 218595980]

約数ペア:

[(1, 218595980), (2, 109297990), (4, 54648995), (5, 43719196), (10, 21859598), (20, 10929799), (2351, 92980), (4649, 47020), (4702, 46490), (9298, 23510), (9404, 23245), (11755, 18596)]