21295239

素因数分解:

$3^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{27407}}^1$

素因数の和:27454

約数の個数: 16

約数和(自身を含む): 33328128

約数和(自身を除く): 12032889

約数列:

[1, 3, 7, 21, 37, 111, 259, 777, 27407, 82221, 191849, 575547, 1014059, 3042177, 7098413, 21295239]

約数ペア:

[(1, 21295239), (3, 7098413), (7, 3042177), (21, 1014059), (37, 575547), (111, 191849), (259, 82221), (777, 27407)]