20624816

素因数分解:

$2^4\times {\mathrm{641}}^1\times {\mathrm{2011}}^1$

素因数の和:2660

約数の個数: 20

約数和(自身を含む): 40042824

約数和(自身を除く): 19418008

約数列:

[1, 2, 4, 8, 16, 641, 1282, 2011, 2564, 4022, 5128, 8044, 10256, 16088, 32176, 1289051, 2578102, 5156204, 10312408, 20624816]

約数ペア:

[(1, 20624816), (2, 10312408), (4, 5156204), (8, 2578102), (16, 1289051), (641, 32176), (1282, 16088), (2011, 10256), (2564, 8044), (4022, 5128)]