7864240

素因数分解:

$2^4\times 5^1\times {\mathrm{197}}^1\times {\mathrm{499}}^1$

素因数の和:709

約数の個数: 40

約数和(自身を含む): 18414000

約数和(自身を除く): 10549760

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 197, 394, 499, 788, 985, 998, 1576, 1970, 1996, 2495, 3152, 3940, 3992, 4990, 7880, 7984, 9980, 15760, 19960, 39920, 98303, 196606, 393212, 491515, 786424, 983030, 1572848, 1966060, 3932120, 7864240]

約数ペア:

[(1, 7864240), (2, 3932120), (4, 1966060), (5, 1572848), (8, 983030), (10, 786424), (16, 491515), (20, 393212), (40, 196606), (80, 98303), (197, 39920), (394, 19960), (499, 15760), (788, 9980), (985, 7984), (998, 7880), (1576, 4990), (1970, 3992), (1996, 3940), (2495, 3152)]