21287731

素因数分解:

${\mathrm{31}}^1\times {\mathrm{59}}^1\times {\mathrm{103}}^1\times {\mathrm{113}}^1$

素因数の和:306

約数の個数: 16

約数和(自身を含む): 22763520

約数和(自身を除く): 1475789

約数列:

[1, 31, 59, 103, 113, 1829, 3193, 3503, 6077, 6667, 11639, 188387, 206677, 360809, 686701, 21287731]

約数ペア:

[(1, 21287731), (31, 686701), (59, 360809), (103, 206677), (113, 188387), (1829, 11639), (3193, 6667), (3503, 6077)]