18716529

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{113}}^1\times {\mathrm{137}}^1$

素因数の和:297

約数の個数: 32

約数和(自身を含む): 28191744

約数和(自身を除く): 9475215

約数列:

[1, 3, 13, 31, 39, 93, 113, 137, 339, 403, 411, 1209, 1469, 1781, 3503, 4247, 4407, 5343, 10509, 12741, 15481, 45539, 46443, 55211, 136617, 165633, 201253, 479911, 603759, 1439733, 6238843, 18716529]

約数ペア:

[(1, 18716529), (3, 6238843), (13, 1439733), (31, 603759), (39, 479911), (93, 201253), (113, 165633), (137, 136617), (339, 55211), (403, 46443), (411, 45539), (1209, 15481), (1469, 12741), (1781, 10509), (3503, 5343), (4247, 4407)]