20012727

素因数分解:

$3^1\times 7^2\times {\mathrm{109}}^1\times {\mathrm{1249}}^1$

素因数の和:1375

約数の個数: 24

約数和(自身を含む): 31350000

約数和(自身を除く): 11337273

約数列:

[1, 3, 7, 21, 49, 109, 147, 327, 763, 1249, 2289, 3747, 5341, 8743, 16023, 26229, 61201, 136141, 183603, 408423, 952987, 2858961, 6670909, 20012727]

約数ペア:

[(1, 20012727), (3, 6670909), (7, 2858961), (21, 952987), (49, 408423), (109, 183603), (147, 136141), (327, 61201), (763, 26229), (1249, 16023), (2289, 8743), (3747, 5341)]