21158305

素因数分解:

$5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{31817}}^1$

素因数の和:31848

約数の個数: 16

約数和(自身を含む): 30545280

約数和(自身を除く): 9386975

約数列:

[1, 5, 7, 19, 35, 95, 133, 665, 31817, 159085, 222719, 604523, 1113595, 3022615, 4231661, 21158305]

約数ペア:

[(1, 21158305), (5, 4231661), (7, 3022615), (19, 1113595), (35, 604523), (95, 222719), (133, 159085), (665, 31817)]