20516977

素因数分解:

${\mathrm{13}}^1\times {\mathrm{17}}^2\times {\mathrm{43}}^1\times {\mathrm{127}}^1$

素因数の和:217

約数の個数: 24

約数和(自身を含む): 24206336

約数和(自身を除く): 3689359

約数列:

[1, 13, 17, 43, 127, 221, 289, 559, 731, 1651, 2159, 3757, 5461, 9503, 12427, 28067, 36703, 70993, 92837, 161551, 477139, 1206881, 1578229, 20516977]

約数ペア:

[(1, 20516977), (13, 1578229), (17, 1206881), (43, 477139), (127, 161551), (221, 92837), (289, 70993), (559, 36703), (731, 28067), (1651, 12427), (2159, 9503), (3757, 5461)]