19493980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{88609}}^1$

素因数の和:88629

約数の個数: 24

約数和(自身を含む): 44659440

約数和(自身を除く): 25165460

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 88609, 177218, 354436, 443045, 886090, 974699, 1772180, 1949398, 3898796, 4873495, 9746990, 19493980]

約数ペア:

[(1, 19493980), (2, 9746990), (4, 4873495), (5, 3898796), (10, 1949398), (11, 1772180), (20, 974699), (22, 886090), (44, 443045), (55, 354436), (110, 177218), (220, 88609)]