257002109

素因数分解:

$7^2\times {\mathrm{13}}^1\times {\mathrm{313}}^1\times {\mathrm{1289}}^1$

素因数の和:1629

約数の個数: 24

約数和(自身を含む): 323237880

約数和(自身を除く): 66235771

約数列:

[1, 7, 13, 49, 91, 313, 637, 1289, 2191, 4069, 9023, 15337, 16757, 28483, 63161, 117299, 199381, 403457, 821093, 2824199, 5244941, 19769393, 36714587, 257002109]

約数ペア:

[(1, 257002109), (7, 36714587), (13, 19769393), (49, 5244941), (91, 2824199), (313, 821093), (637, 403457), (1289, 199381), (2191, 117299), (4069, 63161), (9023, 28483), (15337, 16757)]