971555221

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{479}}^1\times {\mathrm{719}}^1$

素因数の和:1249

約数の個数: 32

約数和(自身を含む): 1238630400

約数和(自身を除く): 267075179

約数列:

[1, 7, 13, 31, 91, 217, 403, 479, 719, 2821, 3353, 5033, 6227, 9347, 14849, 22289, 43589, 65429, 103943, 156023, 193037, 289757, 344401, 1351259, 2028299, 2410807, 4477213, 10676431, 31340491, 74735017, 138793603, 971555221]

約数ペア:

[(1, 971555221), (7, 138793603), (13, 74735017), (31, 31340491), (91, 10676431), (217, 4477213), (403, 2410807), (479, 2028299), (719, 1351259), (2821, 344401), (3353, 289757), (5033, 193037), (6227, 156023), (9347, 103943), (14849, 65429), (22289, 43589)]