20149731

素因数分解:

$3^2\times 7^2\times {\mathrm{45691}}^1$

素因数の和:45711

約数の個数: 18

約数和(自身を含む): 33857772

約数和(自身を除く): 13708041

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 45691, 137073, 319837, 411219, 959511, 2238859, 2878533, 6716577, 20149731]

約数ペア:

[(1, 20149731), (3, 6716577), (7, 2878533), (9, 2238859), (21, 959511), (49, 411219), (63, 319837), (147, 137073), (441, 45691)]