81836000

素因数分解:

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

素因数の和:565

約数の個数: 96

約数和(自身を含む): 206388000

約数和(自身を除く): 124552000

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 41, 50, 80, 82, 100, 125, 160, 164, 200, 205, 250, 328, 400, 410, 499, 500, 656, 800, 820, 998, 1000, 1025, 1312, 1640, 1996, 2000, 2050, 2495, 3280, 3992, 4000, 4100, 4990, 5125, 6560, 7984, 8200, 9980, 10250, 12475, 15968, 16400, 19960, 20459, 20500, 24950, 32800, 39920, 40918, 41000, 49900, 62375, 79840, 81836, 82000, 99800, 102295, 124750, 163672, 164000, 199600, 204590, 249500, 327344, 399200, 409180, 499000, 511475, 654688, 818360, 998000, 1022950, 1636720, 1996000, 2045900, 2557375, 3273440, 4091800, 5114750, 8183600, 10229500, 16367200, 20459000, 40918000, 81836000]

約数ペア:

[(1, 81836000), (2, 40918000), (4, 20459000), (5, 16367200), (8, 10229500), (10, 8183600), (16, 5114750), (20, 4091800), (25, 3273440), (32, 2557375), (40, 2045900), (41, 1996000), (50, 1636720), (80, 1022950), (82, 998000), (100, 818360), (125, 654688), (160, 511475), (164, 499000), (200, 409180), (205, 399200), (250, 327344), (328, 249500), (400, 204590), (410, 199600), (499, 164000), (500, 163672), (656, 124750), (800, 102295), (820, 99800), (998, 82000), (1000, 81836), (1025, 79840), (1312, 62375), (1640, 49900), (1996, 41000), (2000, 40918), (2050, 39920), (2495, 32800), (3280, 24950), (3992, 20500), (4000, 20459), (4100, 19960), (4990, 16400), (5125, 15968), (6560, 12475), (7984, 10250), (8200, 9980)]