20590731

素因数分解:

$3^2\times 7^2\times {\mathrm{46691}}^1$

素因数の和:46711

約数の個数: 18

約数和(自身を含む): 34598772

約数和(自身を除く): 14008041

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 46691, 140073, 326837, 420219, 980511, 2287859, 2941533, 6863577, 20590731]

約数ペア:

[(1, 20590731), (3, 6863577), (7, 2941533), (9, 2287859), (21, 980511), (49, 420219), (63, 326837), (147, 140073), (441, 46691)]