21345813

素因数分解:

$3^2\times {\mathrm{113}}^1\times {\mathrm{139}}^1\times {\mathrm{151}}^1$

素因数の和:409

約数の個数: 24

約数和(自身を含む): 31536960

約数和(自身を除く): 10191147

約数列:

[1, 3, 9, 113, 139, 151, 339, 417, 453, 1017, 1251, 1359, 15707, 17063, 20989, 47121, 51189, 62967, 141363, 153567, 188901, 2371757, 7115271, 21345813]

約数ペア:

[(1, 21345813), (3, 7115271), (9, 2371757), (113, 188901), (139, 153567), (151, 141363), (339, 62967), (417, 51189), (453, 47121), (1017, 20989), (1251, 17063), (1359, 15707)]