28531521

素因数分解:

$3^4\times {\mathrm{19}}^1\times {\mathrm{18539}}^1$

素因数の和:18570

約数の個数: 20

約数和(自身を含む): 44866800

約数和(自身を除く): 16335279

約数列:

[1, 3, 9, 19, 27, 57, 81, 171, 513, 1539, 18539, 55617, 166851, 352241, 500553, 1056723, 1501659, 3170169, 9510507, 28531521]

約数ペア:

[(1, 28531521), (3, 9510507), (9, 3170169), (19, 1501659), (27, 1056723), (57, 500553), (81, 352241), (171, 166851), (513, 55617), (1539, 18539)]