28078000

素因数分解:

$2^4\times 5^3\times {\mathrm{101}}^1\times {\mathrm{139}}^1$

素因数の和:263

約数の個数: 80

約数和(自身を含む): 69058080

約数和(自身を除く): 40980080

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 101, 125, 139, 200, 202, 250, 278, 400, 404, 500, 505, 556, 695, 808, 1000, 1010, 1112, 1390, 1616, 2000, 2020, 2224, 2525, 2780, 3475, 4040, 5050, 5560, 6950, 8080, 10100, 11120, 12625, 13900, 14039, 17375, 20200, 25250, 27800, 28078, 34750, 40400, 50500, 55600, 56156, 69500, 70195, 101000, 112312, 139000, 140390, 202000, 224624, 278000, 280780, 350975, 561560, 701950, 1123120, 1403900, 1754875, 2807800, 3509750, 5615600, 7019500, 14039000, 28078000]

約数ペア:

[(1, 28078000), (2, 14039000), (4, 7019500), (5, 5615600), (8, 3509750), (10, 2807800), (16, 1754875), (20, 1403900), (25, 1123120), (40, 701950), (50, 561560), (80, 350975), (100, 280780), (101, 278000), (125, 224624), (139, 202000), (200, 140390), (202, 139000), (250, 112312), (278, 101000), (400, 70195), (404, 69500), (500, 56156), (505, 55600), (556, 50500), (695, 40400), (808, 34750), (1000, 28078), (1010, 27800), (1112, 25250), (1390, 20200), (1616, 17375), (2000, 14039), (2020, 13900), (2224, 12625), (2525, 11120), (2780, 10100), (3475, 8080), (4040, 6950), (5050, 5560)]