20131240

素因数分解:

$2^3\times 5^1\times {\mathrm{463}}^1\times {\mathrm{1087}}^1$

素因数の和:1561

約数の個数: 32

約数和(自身を含む): 45434880

約数和(自身を除く): 25303640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 463, 926, 1087, 1852, 2174, 2315, 3704, 4348, 4630, 5435, 8696, 9260, 10870, 18520, 21740, 43480, 503281, 1006562, 2013124, 2516405, 4026248, 5032810, 10065620, 20131240]

約数ペア:

[(1, 20131240), (2, 10065620), (4, 5032810), (5, 4026248), (8, 2516405), (10, 2013124), (20, 1006562), (40, 503281), (463, 43480), (926, 21740), (1087, 18520), (1852, 10870), (2174, 9260), (2315, 8696), (3704, 5435), (4348, 4630)]