31442000

素因数分解:

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

素因数の和:301

約数の個数: 80

約数和(自身を含む): 77376000

約数和(自身を除く): 45934000

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 79, 80, 100, 125, 158, 199, 200, 250, 316, 395, 398, 400, 500, 632, 790, 796, 995, 1000, 1264, 1580, 1592, 1975, 1990, 2000, 3160, 3184, 3950, 3980, 4975, 6320, 7900, 7960, 9875, 9950, 15721, 15800, 15920, 19750, 19900, 24875, 31442, 31600, 39500, 39800, 49750, 62884, 78605, 79000, 79600, 99500, 125768, 157210, 158000, 199000, 251536, 314420, 393025, 398000, 628840, 786050, 1257680, 1572100, 1965125, 3144200, 3930250, 6288400, 7860500, 15721000, 31442000]

約数ペア:

[(1, 31442000), (2, 15721000), (4, 7860500), (5, 6288400), (8, 3930250), (10, 3144200), (16, 1965125), (20, 1572100), (25, 1257680), (40, 786050), (50, 628840), (79, 398000), (80, 393025), (100, 314420), (125, 251536), (158, 199000), (199, 158000), (200, 157210), (250, 125768), (316, 99500), (395, 79600), (398, 79000), (400, 78605), (500, 62884), (632, 49750), (790, 39800), (796, 39500), (995, 31600), (1000, 31442), (1264, 24875), (1580, 19900), (1592, 19750), (1975, 15920), (1990, 15800), (2000, 15721), (3160, 9950), (3184, 9875), (3950, 7960), (3980, 7900), (4975, 6320)]