21748000

素因数分解:

$2^5\times 5^3\times {\mathrm{5437}}^1$

素因数の和:5462

約数の個数: 48

約数和(自身を含む): 53444664

約数和(自身を除く): 31696664

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 125, 160, 200, 250, 400, 500, 800, 1000, 2000, 4000, 5437, 10874, 21748, 27185, 43496, 54370, 86992, 108740, 135925, 173984, 217480, 271850, 434960, 543700, 679625, 869920, 1087400, 1359250, 2174800, 2718500, 4349600, 5437000, 10874000, 21748000]

約数ペア:

[(1, 21748000), (2, 10874000), (4, 5437000), (5, 4349600), (8, 2718500), (10, 2174800), (16, 1359250), (20, 1087400), (25, 869920), (32, 679625), (40, 543700), (50, 434960), (80, 271850), (100, 217480), (125, 173984), (160, 135925), (200, 108740), (250, 86992), (400, 54370), (500, 43496), (800, 27185), (1000, 21748), (2000, 10874), (4000, 5437)]