64862920

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^2\times {\mathrm{877}}^1$

素因数の和:974

約数の個数: 48

約数和(自身を含む): 149584860

約数和(自身を除く): 84721940

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 877, 1720, 1754, 1849, 3508, 3698, 4385, 7016, 7396, 8770, 9245, 14792, 17540, 18490, 35080, 36980, 37711, 73960, 75422, 150844, 188555, 301688, 377110, 754220, 1508440, 1621573, 3243146, 6486292, 8107865, 12972584, 16215730, 32431460, 64862920]

約数ペア:

[(1, 64862920), (2, 32431460), (4, 16215730), (5, 12972584), (8, 8107865), (10, 6486292), (20, 3243146), (40, 1621573), (43, 1508440), (86, 754220), (172, 377110), (215, 301688), (344, 188555), (430, 150844), (860, 75422), (877, 73960), (1720, 37711), (1754, 36980), (1849, 35080), (3508, 18490), (3698, 17540), (4385, 14792), (7016, 9245), (7396, 8770)]