87933881

素因数分解:

$7^3\times {\mathrm{19}}^1\times {\mathrm{103}}^1\times {\mathrm{131}}^1$

素因数の和:274

約数の個数: 32

約数和(自身を含む): 109824000

約数和(自身を除く): 21890119

約数列:

[1, 7, 19, 49, 103, 131, 133, 343, 721, 917, 931, 1957, 2489, 5047, 6419, 6517, 13493, 13699, 17423, 35329, 44933, 94451, 95893, 121961, 256367, 661157, 671251, 853727, 1794569, 4628099, 12561983, 87933881]

約数ペア:

[(1, 87933881), (7, 12561983), (19, 4628099), (49, 1794569), (103, 853727), (131, 671251), (133, 661157), (343, 256367), (721, 121961), (917, 95893), (931, 94451), (1957, 44933), (2489, 35329), (5047, 17423), (6419, 13699), (6517, 13493)]