21828779

素因数分解:

$7^1\times {\mathrm{37}}^1\times {\mathrm{271}}^1\times {\mathrm{311}}^1$

素因数の和:626

約数の個数: 16

約数和(自身を含む): 25798656

約数和(自身を除く): 3969877

約数列:

[1, 7, 37, 259, 271, 311, 1897, 2177, 10027, 11507, 70189, 80549, 84281, 589967, 3118397, 21828779]

約数ペア:

[(1, 21828779), (7, 3118397), (37, 589967), (259, 84281), (271, 80549), (311, 70189), (1897, 11507), (2177, 10027)]