646677

素因数分解:

$3^3\times {\mathrm{43}}^1\times {\mathrm{557}}^1$

素因数の和:609

約数の個数: 16

約数和(自身を含む): 982080

約数和(自身を除く): 335403

約数列:

[1, 3, 9, 27, 43, 129, 387, 557, 1161, 1671, 5013, 15039, 23951, 71853, 215559, 646677]

約数ペア:

[(1, 646677), (3, 215559), (9, 71853), (27, 23951), (43, 15039), (129, 5013), (387, 1671), (557, 1161)]