80659280

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{77557}}^1$

素因数の和:77583

約数の個数: 40

約数和(自身を含む): 201961032

約数和(自身を除く): 121301752

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 77557, 155114, 310228, 387785, 620456, 775570, 1008241, 1240912, 1551140, 2016482, 3102280, 4032964, 5041205, 6204560, 8065928, 10082410, 16131856, 20164820, 40329640, 80659280]

約数ペア:

[(1, 80659280), (2, 40329640), (4, 20164820), (5, 16131856), (8, 10082410), (10, 8065928), (13, 6204560), (16, 5041205), (20, 4032964), (26, 3102280), (40, 2016482), (52, 1551140), (65, 1240912), (80, 1008241), (104, 775570), (130, 620456), (208, 387785), (260, 310228), (520, 155114), (1040, 77557)]