20168920

素因数分解:

$2^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{17387}}^1$

素因数の和:17427

約数の個数: 32

約数和(自身を含む): 46947600

約数和(自身を除く): 26778680

約数列:

[1, 2, 4, 5, 8, 10, 20, 29, 40, 58, 116, 145, 232, 290, 580, 1160, 17387, 34774, 69548, 86935, 139096, 173870, 347740, 504223, 695480, 1008446, 2016892, 2521115, 4033784, 5042230, 10084460, 20168920]

約数ペア:

[(1, 20168920), (2, 10084460), (4, 5042230), (5, 4033784), (8, 2521115), (10, 2016892), (20, 1008446), (29, 695480), (40, 504223), (58, 347740), (116, 173870), (145, 139096), (232, 86935), (290, 69548), (580, 34774), (1160, 17387)]