20875715

素因数分解:

$5^1\times 7^2\times {\mathrm{139}}^1\times {\mathrm{613}}^1$

素因数の和:771

約数の個数: 24

約数和(自身を含む): 29398320

約数和(自身を除く): 8522605

約数列:

[1, 5, 7, 35, 49, 139, 245, 613, 695, 973, 3065, 4291, 4865, 6811, 21455, 30037, 34055, 85207, 150185, 426035, 596449, 2982245, 4175143, 20875715]

約数ペア:

[(1, 20875715), (5, 4175143), (7, 2982245), (35, 596449), (49, 426035), (139, 150185), (245, 85207), (613, 34055), (695, 30037), (973, 21455), (3065, 6811), (4291, 4865)]