20112281

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{2357}}^1$

素因数の和:2440

約数の個数: 16

約数和(自身を含む): 24447744

約数和(自身を除く): 4335463

約数列:

[1, 7, 23, 53, 161, 371, 1219, 2357, 8533, 16499, 54211, 124921, 379477, 874447, 2873183, 20112281]

約数ペア:

[(1, 20112281), (7, 2873183), (23, 874447), (53, 379477), (161, 124921), (371, 54211), (1219, 16499), (2357, 8533)]