86939980

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^2\times {\mathrm{2351}}^1$

素因数の和:2446

約数の個数: 36

約数和(自身を含む): 186998112

約数和(自身を除く): 100058132

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 860, 1849, 2351, 3698, 4702, 7396, 9245, 9404, 11755, 18490, 23510, 36980, 47020, 101093, 202186, 404372, 505465, 1010930, 2021860, 4346999, 8693998, 17387996, 21734995, 43469990, 86939980]

約数ペア:

[(1, 86939980), (2, 43469990), (4, 21734995), (5, 17387996), (10, 8693998), (20, 4346999), (43, 2021860), (86, 1010930), (172, 505465), (215, 404372), (430, 202186), (860, 101093), (1849, 47020), (2351, 36980), (3698, 23510), (4702, 18490), (7396, 11755), (9245, 9404)]