278740

素因数分解:

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

素因数の和:208

約数の個数: 48

約数和(自身を含む): 733824

約数和(自身を除く): 455084

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 77, 110, 140, 154, 181, 220, 308, 362, 385, 724, 770, 905, 1267, 1540, 1810, 1991, 2534, 3620, 3982, 5068, 6335, 7964, 9955, 12670, 13937, 19910, 25340, 27874, 39820, 55748, 69685, 139370, 278740]

約数ペア:

[(1, 278740), (2, 139370), (4, 69685), (5, 55748), (7, 39820), (10, 27874), (11, 25340), (14, 19910), (20, 13937), (22, 12670), (28, 9955), (35, 7964), (44, 6335), (55, 5068), (70, 3982), (77, 3620), (110, 2534), (140, 1991), (154, 1810), (181, 1540), (220, 1267), (308, 905), (362, 770), (385, 724)]