31279983

素因数分解:

$3^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{12517}}^1$

素因数の和:12551

約数の個数: 24

約数和(自身を含む): 51373872

約数和(自身を除く): 20093889

約数列:

[1, 3, 7, 17, 21, 49, 51, 119, 147, 357, 833, 2499, 12517, 37551, 87619, 212789, 262857, 613333, 638367, 1489523, 1839999, 4468569, 10426661, 31279983]

約数ペア:

[(1, 31279983), (3, 10426661), (7, 4468569), (17, 1839999), (21, 1489523), (49, 638367), (51, 613333), (119, 262857), (147, 212789), (357, 87619), (833, 37551), (2499, 12517)]