20674390

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{6481}}^1$

素因数の和:6528

約数の個数: 32

約数和(自身を含む): 42003360

約数和(自身を除く): 21328970

約数列:

[1, 2, 5, 10, 11, 22, 29, 55, 58, 110, 145, 290, 319, 638, 1595, 3190, 6481, 12962, 32405, 64810, 71291, 142582, 187949, 356455, 375898, 712910, 939745, 1879490, 2067439, 4134878, 10337195, 20674390]

約数ペア:

[(1, 20674390), (2, 10337195), (5, 4134878), (10, 2067439), (11, 1879490), (22, 939745), (29, 712910), (55, 375898), (58, 356455), (110, 187949), (145, 142582), (290, 71291), (319, 64810), (638, 32405), (1595, 12962), (3190, 6481)]