19983500

素因数分解:

$2^2\times 5^3\times {\mathrm{17}}^1\times {\mathrm{2351}}^1$

素因数の和:2387

約数の個数: 48

約数和(自身を含む): 46230912

約数和(自身を除く): 26247412

約数列:

[1, 2, 4, 5, 10, 17, 20, 25, 34, 50, 68, 85, 100, 125, 170, 250, 340, 425, 500, 850, 1700, 2125, 2351, 4250, 4702, 8500, 9404, 11755, 23510, 39967, 47020, 58775, 79934, 117550, 159868, 199835, 235100, 293875, 399670, 587750, 799340, 999175, 1175500, 1998350, 3996700, 4995875, 9991750, 19983500]

約数ペア:

[(1, 19983500), (2, 9991750), (4, 4995875), (5, 3996700), (10, 1998350), (17, 1175500), (20, 999175), (25, 799340), (34, 587750), (50, 399670), (68, 293875), (85, 235100), (100, 199835), (125, 159868), (170, 117550), (250, 79934), (340, 58775), (425, 47020), (500, 39967), (850, 23510), (1700, 11755), (2125, 9404), (2351, 8500), (4250, 4702)]