15821421

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{68491}}^1$

素因数の和:68512

約数の個数: 16

約数和(自身を含む): 26300928

約数和(自身を除く): 10479507

約数列:

[1, 3, 7, 11, 21, 33, 77, 231, 68491, 205473, 479437, 753401, 1438311, 2260203, 5273807, 15821421]

約数ペア:

[(1, 15821421), (3, 5273807), (7, 2260203), (11, 1438311), (21, 753401), (33, 479437), (77, 205473), (231, 68491)]