645238

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{139}}^1\times {\mathrm{211}}^1$

素因数の和:363

約数の個数: 16

約数和(自身を含む): 1068480

約数和(自身を除く): 423242

約数列:

[1, 2, 11, 22, 139, 211, 278, 422, 1529, 2321, 3058, 4642, 29329, 58658, 322619, 645238]

約数ペア:

[(1, 645238), (2, 322619), (11, 58658), (22, 29329), (139, 4642), (211, 3058), (278, 2321), (422, 1529)]