8640940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{181}}^1$

素因数の和:239

約数の個数: 96

約数和(自身を含む): 23482368

約数和(自身を除く): 14841428

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 31, 35, 44, 55, 62, 70, 77, 110, 124, 140, 154, 155, 181, 217, 220, 308, 310, 341, 362, 385, 434, 620, 682, 724, 770, 868, 905, 1085, 1267, 1364, 1540, 1705, 1810, 1991, 2170, 2387, 2534, 3410, 3620, 3982, 4340, 4774, 5068, 5611, 6335, 6820, 7964, 9548, 9955, 11222, 11935, 12670, 13937, 19910, 22444, 23870, 25340, 27874, 28055, 39277, 39820, 47740, 55748, 56110, 61721, 69685, 78554, 112220, 123442, 139370, 157108, 196385, 246884, 278740, 308605, 392770, 432047, 617210, 785540, 864094, 1234420, 1728188, 2160235, 4320470, 8640940]

約数ペア:

[(1, 8640940), (2, 4320470), (4, 2160235), (5, 1728188), (7, 1234420), (10, 864094), (11, 785540), (14, 617210), (20, 432047), (22, 392770), (28, 308605), (31, 278740), (35, 246884), (44, 196385), (55, 157108), (62, 139370), (70, 123442), (77, 112220), (110, 78554), (124, 69685), (140, 61721), (154, 56110), (155, 55748), (181, 47740), (217, 39820), (220, 39277), (308, 28055), (310, 27874), (341, 25340), (362, 23870), (385, 22444), (434, 19910), (620, 13937), (682, 12670), (724, 11935), (770, 11222), (868, 9955), (905, 9548), (1085, 7964), (1267, 6820), (1364, 6335), (1540, 5611), (1705, 5068), (1810, 4774), (1991, 4340), (2170, 3982), (2387, 3620), (2534, 3410)]