20971359

素因数分解:

$3^3\times {\mathrm{167}}^1\times {\mathrm{4651}}^1$

素因数の和:4827

約数の個数: 16

約数和(自身を含む): 31261440

約数和(自身を除く): 10290081

約数列:

[1, 3, 9, 27, 167, 501, 1503, 4509, 4651, 13953, 41859, 125577, 776717, 2330151, 6990453, 20971359]

約数ペア:

[(1, 20971359), (3, 6990453), (9, 2330151), (27, 776717), (167, 125577), (501, 41859), (1503, 13953), (4509, 4651)]