678364820

素因数分解:

$2^2\times 5^1\times 7^3\times {\mathrm{98887}}^1$

素因数の和:98917

約数の個数: 48

約数和(自身を含む): 1661318400

約数和(自身を除く): 982953580

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 343, 490, 686, 980, 1372, 1715, 3430, 6860, 98887, 197774, 395548, 494435, 692209, 988870, 1384418, 1977740, 2768836, 3461045, 4845463, 6922090, 9690926, 13844180, 19381852, 24227315, 33918241, 48454630, 67836482, 96909260, 135672964, 169591205, 339182410, 678364820]

約数ペア:

[(1, 678364820), (2, 339182410), (4, 169591205), (5, 135672964), (7, 96909260), (10, 67836482), (14, 48454630), (20, 33918241), (28, 24227315), (35, 19381852), (49, 13844180), (70, 9690926), (98, 6922090), (140, 4845463), (196, 3461045), (245, 2768836), (343, 1977740), (490, 1384418), (686, 988870), (980, 692209), (1372, 494435), (1715, 395548), (3430, 197774), (6860, 98887)]