9890980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{44959}}^1$

素因数の和:44979

約数の個数: 24

約数和(自身を含む): 22659840

約数和(自身を除く): 12768860

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 44959, 89918, 179836, 224795, 449590, 494549, 899180, 989098, 1978196, 2472745, 4945490, 9890980]

約数ペア:

[(1, 9890980), (2, 4945490), (4, 2472745), (5, 1978196), (10, 989098), (11, 899180), (20, 494549), (22, 449590), (44, 224795), (55, 179836), (110, 89918), (220, 44959)]