21065317

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{83}}^1\times {\mathrm{2789}}^1$

素因数の和:2892

約数の個数: 16

約数和(自身を含む): 26248320

約数和(自身を除く): 5183003

約数列:

[1, 7, 13, 83, 91, 581, 1079, 2789, 7553, 19523, 36257, 231487, 253799, 1620409, 3009331, 21065317]

約数ペア:

[(1, 21065317), (7, 3009331), (13, 1620409), (83, 253799), (91, 231487), (581, 36257), (1079, 19523), (2789, 7553)]