65330840

素因数分解:

$2^3\times 5^1\times {\mathrm{101}}^1\times {\mathrm{103}}^1\times {\mathrm{157}}^1$

素因数の和:372

約数の個数: 64

約数和(自身を含む): 150845760

約数和(自身を除く): 85514920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 101, 103, 157, 202, 206, 314, 404, 412, 505, 515, 628, 785, 808, 824, 1010, 1030, 1256, 1570, 2020, 2060, 3140, 4040, 4120, 6280, 10403, 15857, 16171, 20806, 31714, 32342, 41612, 52015, 63428, 64684, 79285, 80855, 83224, 104030, 126856, 129368, 158570, 161710, 208060, 317140, 323420, 416120, 634280, 646840, 1633271, 3266542, 6533084, 8166355, 13066168, 16332710, 32665420, 65330840]

約数ペア:

[(1, 65330840), (2, 32665420), (4, 16332710), (5, 13066168), (8, 8166355), (10, 6533084), (20, 3266542), (40, 1633271), (101, 646840), (103, 634280), (157, 416120), (202, 323420), (206, 317140), (314, 208060), (404, 161710), (412, 158570), (505, 129368), (515, 126856), (628, 104030), (785, 83224), (808, 80855), (824, 79285), (1010, 64684), (1030, 63428), (1256, 52015), (1570, 41612), (2020, 32342), (2060, 31714), (3140, 20806), (4040, 16171), (4120, 15857), (6280, 10403)]