16920507

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{71}}^1\times {\mathrm{113}}^1$

素因数の和:243

約数の個数: 32

約数和(自身を含む): 24952320

約数和(自身を除く): 8031813

約数列:

[1, 3, 19, 37, 57, 71, 111, 113, 213, 339, 703, 1349, 2109, 2147, 2627, 4047, 4181, 6441, 7881, 8023, 12543, 24069, 49913, 79439, 149739, 152437, 238317, 296851, 457311, 890553, 5640169, 16920507]

約数ペア:

[(1, 16920507), (3, 5640169), (19, 890553), (37, 457311), (57, 296851), (71, 238317), (111, 152437), (113, 149739), (213, 79439), (339, 49913), (703, 24069), (1349, 12543), (2109, 8023), (2147, 7881), (2627, 6441), (4047, 4181)]