40918000

素因数分解:

$2^4\times 5^3\times {\mathrm{41}}^1\times {\mathrm{499}}^1$

素因数の和:563

約数の個数: 80

約数和(自身を含む): 101556000

約数和(自身を除く): 60638000

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 41, 50, 80, 82, 100, 125, 164, 200, 205, 250, 328, 400, 410, 499, 500, 656, 820, 998, 1000, 1025, 1640, 1996, 2000, 2050, 2495, 3280, 3992, 4100, 4990, 5125, 7984, 8200, 9980, 10250, 12475, 16400, 19960, 20459, 20500, 24950, 39920, 40918, 41000, 49900, 62375, 81836, 82000, 99800, 102295, 124750, 163672, 199600, 204590, 249500, 327344, 409180, 499000, 511475, 818360, 998000, 1022950, 1636720, 2045900, 2557375, 4091800, 5114750, 8183600, 10229500, 20459000, 40918000]

約数ペア:

[(1, 40918000), (2, 20459000), (4, 10229500), (5, 8183600), (8, 5114750), (10, 4091800), (16, 2557375), (20, 2045900), (25, 1636720), (40, 1022950), (41, 998000), (50, 818360), (80, 511475), (82, 499000), (100, 409180), (125, 327344), (164, 249500), (200, 204590), (205, 199600), (250, 163672), (328, 124750), (400, 102295), (410, 99800), (499, 82000), (500, 81836), (656, 62375), (820, 49900), (998, 41000), (1000, 40918), (1025, 39920), (1640, 24950), (1996, 20500), (2000, 20459), (2050, 19960), (2495, 16400), (3280, 12475), (3992, 10250), (4100, 9980), (4990, 8200), (5125, 7984)]