21217335

素因数分解:

$3^1\times 5^1\times {\mathrm{223}}^1\times {\mathrm{6343}}^1$

素因数の和:6574

約数の個数: 16

約数和(自身を含む): 34105344

約数和(自身を除く): 12888009

約数列:

[1, 3, 5, 15, 223, 669, 1115, 3345, 6343, 19029, 31715, 95145, 1414489, 4243467, 7072445, 21217335]

約数ペア:

[(1, 21217335), (3, 7072445), (5, 4243467), (15, 1414489), (223, 95145), (669, 31715), (1115, 19029), (3345, 6343)]