4091800

素因数分解:

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

素因数の和:556

約数の個数: 48

約数和(自身を含む): 9765000

約数和(自身を除く): 5673200

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 41, 50, 82, 100, 164, 200, 205, 328, 410, 499, 820, 998, 1025, 1640, 1996, 2050, 2495, 3992, 4100, 4990, 8200, 9980, 12475, 19960, 20459, 24950, 40918, 49900, 81836, 99800, 102295, 163672, 204590, 409180, 511475, 818360, 1022950, 2045900, 4091800]

約数ペア:

[(1, 4091800), (2, 2045900), (4, 1022950), (5, 818360), (8, 511475), (10, 409180), (20, 204590), (25, 163672), (40, 102295), (41, 99800), (50, 81836), (82, 49900), (100, 40918), (164, 24950), (200, 20459), (205, 19960), (328, 12475), (410, 9980), (499, 8200), (820, 4990), (998, 4100), (1025, 3992), (1640, 2495), (1996, 2050)]