388611640

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{101}}^1\times {\mathrm{2237}}^1$

素因数の和:2392

約数の個数: 64

約数和(自身を含む): 903972960

約数和(自身を除く): 515361320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 101, 172, 202, 215, 344, 404, 430, 505, 808, 860, 1010, 1720, 2020, 2237, 4040, 4343, 4474, 8686, 8948, 11185, 17372, 17896, 21715, 22370, 34744, 43430, 44740, 86860, 89480, 96191, 173720, 192382, 225937, 384764, 451874, 480955, 769528, 903748, 961910, 1129685, 1807496, 1923820, 2259370, 3847640, 4518740, 9037480, 9715291, 19430582, 38861164, 48576455, 77722328, 97152910, 194305820, 388611640]

約数ペア:

[(1, 388611640), (2, 194305820), (4, 97152910), (5, 77722328), (8, 48576455), (10, 38861164), (20, 19430582), (40, 9715291), (43, 9037480), (86, 4518740), (101, 3847640), (172, 2259370), (202, 1923820), (215, 1807496), (344, 1129685), (404, 961910), (430, 903748), (505, 769528), (808, 480955), (860, 451874), (1010, 384764), (1720, 225937), (2020, 192382), (2237, 173720), (4040, 96191), (4343, 89480), (4474, 86860), (8686, 44740), (8948, 43430), (11185, 34744), (17372, 22370), (17896, 21715)]