20617816

素因数分解:

$2^3\times {\mathrm{401}}^1\times {\mathrm{6427}}^1$

素因数の和:6834

約数の個数: 16

約数和(自身を含む): 38760840

約数和(自身を除く): 18143024

約数列:

[1, 2, 4, 8, 401, 802, 1604, 3208, 6427, 12854, 25708, 51416, 2577227, 5154454, 10308908, 20617816]

約数ペア:

[(1, 20617816), (2, 10308908), (4, 5154454), (8, 2577227), (401, 51416), (802, 25708), (1604, 12854), (3208, 6427)]