20993816

素因数分解:

$2^3\times {\mathrm{257}}^1\times {\mathrm{10211}}^1$

素因数の和:10474

約数の個数: 16

約数和(自身を含む): 39520440

約数和(自身を除く): 18526624

約数列:

[1, 2, 4, 8, 257, 514, 1028, 2056, 10211, 20422, 40844, 81688, 2624227, 5248454, 10496908, 20993816]

約数ペア:

[(1, 20993816), (2, 10496908), (4, 5248454), (8, 2624227), (257, 81688), (514, 40844), (1028, 20422), (2056, 10211)]