81140080

素因数分解:

$2^4\times 5^1\times 7^3\times {\mathrm{2957}}^1$

素因数の和:2991

約数の個数: 80

約数和(自身を含む): 220075200

約数和(自身を除く): 138935120

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 49, 56, 70, 80, 98, 112, 140, 196, 245, 280, 343, 392, 490, 560, 686, 784, 980, 1372, 1715, 1960, 2744, 2957, 3430, 3920, 5488, 5914, 6860, 11828, 13720, 14785, 20699, 23656, 27440, 29570, 41398, 47312, 59140, 82796, 103495, 118280, 144893, 165592, 206990, 236560, 289786, 331184, 413980, 579572, 724465, 827960, 1014251, 1159144, 1448930, 1655920, 2028502, 2318288, 2897860, 4057004, 5071255, 5795720, 8114008, 10142510, 11591440, 16228016, 20285020, 40570040, 81140080]

約数ペア:

[(1, 81140080), (2, 40570040), (4, 20285020), (5, 16228016), (7, 11591440), (8, 10142510), (10, 8114008), (14, 5795720), (16, 5071255), (20, 4057004), (28, 2897860), (35, 2318288), (40, 2028502), (49, 1655920), (56, 1448930), (70, 1159144), (80, 1014251), (98, 827960), (112, 724465), (140, 579572), (196, 413980), (245, 331184), (280, 289786), (343, 236560), (392, 206990), (490, 165592), (560, 144893), (686, 118280), (784, 103495), (980, 82796), (1372, 59140), (1715, 47312), (1960, 41398), (2744, 29570), (2957, 27440), (3430, 23656), (3920, 20699), (5488, 14785), (5914, 13720), (6860, 11828)]