20008905

素因数分解:

$3^1\times 5^1\times 7^3\times {\mathrm{3889}}^1$

素因数の和:3918

約数の個数: 32

約数和(自身を含む): 37344000

約数和(自身を除く): 17335095

約数列:

[1, 3, 5, 7, 15, 21, 35, 49, 105, 147, 245, 343, 735, 1029, 1715, 3889, 5145, 11667, 19445, 27223, 58335, 81669, 136115, 190561, 408345, 571683, 952805, 1333927, 2858415, 4001781, 6669635, 20008905]

約数ペア:

[(1, 20008905), (3, 6669635), (5, 4001781), (7, 2858415), (15, 1333927), (21, 952805), (35, 571683), (49, 408345), (105, 190561), (147, 136115), (245, 81669), (343, 58335), (735, 27223), (1029, 19445), (1715, 11667), (3889, 5145)]