664995

素因数分解:

$3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{1031}}^1$

素因数の和:1082

約数の個数: 16

約数和(自身を含む): 1089792

約数和(自身を除く): 424797

約数列:

[1, 3, 5, 15, 43, 129, 215, 645, 1031, 3093, 5155, 15465, 44333, 132999, 221665, 664995]

約数ペア:

[(1, 664995), (3, 221665), (5, 132999), (15, 44333), (43, 15465), (129, 5155), (215, 3093), (645, 1031)]