81470680

素因数分解:

$2^3\times 5^1\times {\mathrm{139}}^1\times {\mathrm{14653}}^1$

素因数の和:14803

約数の個数: 32

約数和(自身を含む): 184640400

約数和(自身を除く): 103169720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 139, 278, 556, 695, 1112, 1390, 2780, 5560, 14653, 29306, 58612, 73265, 117224, 146530, 293060, 586120, 2036767, 4073534, 8147068, 10183835, 16294136, 20367670, 40735340, 81470680]

約数ペア:

[(1, 81470680), (2, 40735340), (4, 20367670), (5, 16294136), (8, 10183835), (10, 8147068), (20, 4073534), (40, 2036767), (139, 586120), (278, 293060), (556, 146530), (695, 117224), (1112, 73265), (1390, 58612), (2780, 29306), (5560, 14653)]