40198000

素因数分解:

$2^4\times 5^3\times {\mathrm{101}}^1\times {\mathrm{199}}^1$

素因数の和:323

約数の個数: 80

約数和(自身を含む): 98654400

約数和(自身を除く): 58456400

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 101, 125, 199, 200, 202, 250, 398, 400, 404, 500, 505, 796, 808, 995, 1000, 1010, 1592, 1616, 1990, 2000, 2020, 2525, 3184, 3980, 4040, 4975, 5050, 7960, 8080, 9950, 10100, 12625, 15920, 19900, 20099, 20200, 24875, 25250, 39800, 40198, 40400, 49750, 50500, 79600, 80396, 99500, 100495, 101000, 160792, 199000, 200990, 202000, 321584, 398000, 401980, 502475, 803960, 1004950, 1607920, 2009900, 2512375, 4019800, 5024750, 8039600, 10049500, 20099000, 40198000]

約数ペア:

[(1, 40198000), (2, 20099000), (4, 10049500), (5, 8039600), (8, 5024750), (10, 4019800), (16, 2512375), (20, 2009900), (25, 1607920), (40, 1004950), (50, 803960), (80, 502475), (100, 401980), (101, 398000), (125, 321584), (199, 202000), (200, 200990), (202, 199000), (250, 160792), (398, 101000), (400, 100495), (404, 99500), (500, 80396), (505, 79600), (796, 50500), (808, 49750), (995, 40400), (1000, 40198), (1010, 39800), (1592, 25250), (1616, 24875), (1990, 20200), (2000, 20099), (2020, 19900), (2525, 15920), (3184, 12625), (3980, 10100), (4040, 9950), (4975, 8080), (5050, 7960)]