664080487

素因数分解:

$7^2\times {\mathrm{641}}^1\times {\mathrm{21143}}^1$

素因数の和:21798

約数の個数: 12

約数和(自身を含む): 773743536

約数和(自身を除く): 109663049

約数列:

[1, 7, 49, 641, 4487, 21143, 31409, 148001, 1036007, 13552663, 94868641, 664080487]

約数ペア:

[(1, 664080487), (7, 94868641), (49, 13552663), (641, 1036007), (4487, 148001), (21143, 31409)]