100495000

素因数分解:

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

素因数の和:326

約数の個数: 80

約数和(自身を含む): 238986000

約数和(自身を除く): 138491000

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 101, 125, 199, 200, 202, 250, 398, 404, 500, 505, 625, 796, 808, 995, 1000, 1010, 1250, 1592, 1990, 2020, 2500, 2525, 3980, 4040, 4975, 5000, 5050, 7960, 9950, 10100, 12625, 19900, 20099, 20200, 24875, 25250, 39800, 40198, 49750, 50500, 63125, 80396, 99500, 100495, 101000, 124375, 126250, 160792, 199000, 200990, 248750, 252500, 401980, 497500, 502475, 505000, 803960, 995000, 1004950, 2009900, 2512375, 4019800, 5024750, 10049500, 12561875, 20099000, 25123750, 50247500, 100495000]

約数ペア:

[(1, 100495000), (2, 50247500), (4, 25123750), (5, 20099000), (8, 12561875), (10, 10049500), (20, 5024750), (25, 4019800), (40, 2512375), (50, 2009900), (100, 1004950), (101, 995000), (125, 803960), (199, 505000), (200, 502475), (202, 497500), (250, 401980), (398, 252500), (404, 248750), (500, 200990), (505, 199000), (625, 160792), (796, 126250), (808, 124375), (995, 101000), (1000, 100495), (1010, 99500), (1250, 80396), (1592, 63125), (1990, 50500), (2020, 49750), (2500, 40198), (2525, 39800), (3980, 25250), (4040, 24875), (4975, 20200), (5000, 20099), (5050, 19900), (7960, 12625), (9950, 10100)]