81486580

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{15731}}^1$

素因数の和:15784

約数の個数: 48

約数和(自身を含む): 200866176

約数和(自身を除く): 119379596

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 37, 70, 74, 140, 148, 185, 259, 370, 518, 740, 1036, 1295, 2590, 5180, 15731, 31462, 62924, 78655, 110117, 157310, 220234, 314620, 440468, 550585, 582047, 1101170, 1164094, 2202340, 2328188, 2910235, 4074329, 5820470, 8148658, 11640940, 16297316, 20371645, 40743290, 81486580]

約数ペア:

[(1, 81486580), (2, 40743290), (4, 20371645), (5, 16297316), (7, 11640940), (10, 8148658), (14, 5820470), (20, 4074329), (28, 2910235), (35, 2328188), (37, 2202340), (70, 1164094), (74, 1101170), (140, 582047), (148, 550585), (185, 440468), (259, 314620), (370, 220234), (518, 157310), (740, 110117), (1036, 78655), (1295, 62924), (2590, 31462), (5180, 15731)]