28221975

素因数分解:

$3^2\times 5^2\times {\mathrm{43}}^1\times {\mathrm{2917}}^1$

素因数の和:2976

約数の個数: 36

約数和(自身を含む): 51741976

約数和(自身を除く): 23520001

約数列:

[1, 3, 5, 9, 15, 25, 43, 45, 75, 129, 215, 225, 387, 645, 1075, 1935, 2917, 3225, 8751, 9675, 14585, 26253, 43755, 72925, 125431, 131265, 218775, 376293, 627155, 656325, 1128879, 1881465, 3135775, 5644395, 9407325, 28221975]

約数ペア:

[(1, 28221975), (3, 9407325), (5, 5644395), (9, 3135775), (15, 1881465), (25, 1128879), (43, 656325), (45, 627155), (75, 376293), (129, 218775), (215, 131265), (225, 125431), (387, 72925), (645, 43755), (1075, 26253), (1935, 14585), (2917, 9675), (3225, 8751)]