38985940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{281}}^1\times {\mathrm{991}}^1$

素因数の和:1288

約数の個数: 48

約数和(自身を含む): 93993984

約数和(自身を除く): 55008044

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 281, 562, 991, 1124, 1405, 1967, 1982, 2810, 3934, 3964, 4955, 5620, 6937, 7868, 9835, 9910, 13874, 19670, 19820, 27748, 34685, 39340, 69370, 138740, 278471, 556942, 1113884, 1392355, 1949297, 2784710, 3898594, 5569420, 7797188, 9746485, 19492970, 38985940]

約数ペア:

[(1, 38985940), (2, 19492970), (4, 9746485), (5, 7797188), (7, 5569420), (10, 3898594), (14, 2784710), (20, 1949297), (28, 1392355), (35, 1113884), (70, 556942), (140, 278471), (281, 138740), (562, 69370), (991, 39340), (1124, 34685), (1405, 27748), (1967, 19820), (1982, 19670), (2810, 13874), (3934, 9910), (3964, 9835), (4955, 7868), (5620, 6937)]