78605000

素因数分解:

$2^3\times 5^4\times {\mathrm{79}}^1\times {\mathrm{199}}^1$

素因数の和:304

約数の個数: 80

約数和(自身を含む): 187440000

約数和(自身を除く): 108835000

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 79, 100, 125, 158, 199, 200, 250, 316, 395, 398, 500, 625, 632, 790, 796, 995, 1000, 1250, 1580, 1592, 1975, 1990, 2500, 3160, 3950, 3980, 4975, 5000, 7900, 7960, 9875, 9950, 15721, 15800, 19750, 19900, 24875, 31442, 39500, 39800, 49375, 49750, 62884, 78605, 79000, 98750, 99500, 124375, 125768, 157210, 197500, 199000, 248750, 314420, 393025, 395000, 497500, 628840, 786050, 995000, 1572100, 1965125, 3144200, 3930250, 7860500, 9825625, 15721000, 19651250, 39302500, 78605000]

約数ペア:

[(1, 78605000), (2, 39302500), (4, 19651250), (5, 15721000), (8, 9825625), (10, 7860500), (20, 3930250), (25, 3144200), (40, 1965125), (50, 1572100), (79, 995000), (100, 786050), (125, 628840), (158, 497500), (199, 395000), (200, 393025), (250, 314420), (316, 248750), (395, 199000), (398, 197500), (500, 157210), (625, 125768), (632, 124375), (790, 99500), (796, 98750), (995, 79000), (1000, 78605), (1250, 62884), (1580, 49750), (1592, 49375), (1975, 39800), (1990, 39500), (2500, 31442), (3160, 24875), (3950, 19900), (3980, 19750), (4975, 15800), (5000, 15721), (7900, 9950), (7960, 9875)]