19489580

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{88589}}^1$

素因数の和:88609

約数の個数: 24

約数和(自身を含む): 44649360

約数和(自身を除く): 25159780

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 88589, 177178, 354356, 442945, 885890, 974479, 1771780, 1948958, 3897916, 4872395, 9744790, 19489580]

約数ペア:

[(1, 19489580), (2, 9744790), (4, 4872395), (5, 3897916), (10, 1948958), (11, 1771780), (20, 974479), (22, 885890), (44, 442945), (55, 354356), (110, 177178), (220, 88589)]