20381473

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{1783}}^1$

素因数の和:1884

約数の個数: 16

約数和(自身を含む): 24662016

約数和(自身を除く): 4280543

約数列:

[1, 7, 23, 71, 161, 497, 1633, 1783, 11431, 12481, 41009, 126593, 287063, 886151, 2911639, 20381473]

約数ペア:

[(1, 20381473), (7, 2911639), (23, 886151), (71, 287063), (161, 126593), (497, 41009), (1633, 12481), (1783, 11431)]