20642456

素因数分解:

$2^3\times {\mathrm{131}}^1\times {\mathrm{19697}}^1$

素因数の和:19834

約数の個数: 16

約数和(自身を含む): 39002040

約数和(自身を除く): 18359584

約数列:

[1, 2, 4, 8, 131, 262, 524, 1048, 19697, 39394, 78788, 157576, 2580307, 5160614, 10321228, 20642456]

約数ペア:

[(1, 20642456), (2, 10321228), (4, 5160614), (8, 2580307), (131, 157576), (262, 78788), (524, 39394), (1048, 19697)]