20801683

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{2749}}^1$

素因数の和:2826

約数の個数: 16

約数和(自身を含む): 25344000

約数和(自身を除く): 4542317

約数列:

[1, 7, 23, 47, 161, 329, 1081, 2749, 7567, 19243, 63227, 129203, 442589, 904421, 2971669, 20801683]

約数ペア:

[(1, 20801683), (7, 2971669), (23, 904421), (47, 442589), (161, 129203), (329, 63227), (1081, 19243), (2749, 7567)]