31561957

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{97}}^1$

素因数の和:217

約数の個数: 32

約数和(自身を含む): 39739392

約数和(自身を除く): 8177435

約数列:

[1, 7, 23, 43, 47, 97, 161, 301, 329, 679, 989, 1081, 2021, 2231, 4171, 4559, 6923, 7567, 14147, 15617, 29197, 31913, 46483, 95933, 104857, 196037, 325381, 671531, 733999, 1372259, 4508851, 31561957]

約数ペア:

[(1, 31561957), (7, 4508851), (23, 1372259), (43, 733999), (47, 671531), (97, 325381), (161, 196037), (301, 104857), (329, 95933), (679, 46483), (989, 31913), (1081, 29197), (2021, 15617), (2231, 14147), (4171, 7567), (4559, 6923)]