28178740

素因数分解:

$2^2\times 5^1\times {\mathrm{103}}^1\times {\mathrm{13679}}^1$

素因数の和:13791

約数の個数: 24

約数和(自身を含む): 59754240

約数和(自身を除く): 31575500

約数列:

[1, 2, 4, 5, 10, 20, 103, 206, 412, 515, 1030, 2060, 13679, 27358, 54716, 68395, 136790, 273580, 1408937, 2817874, 5635748, 7044685, 14089370, 28178740]

約数ペア:

[(1, 28178740), (2, 14089370), (4, 7044685), (5, 5635748), (10, 2817874), (20, 1408937), (103, 273580), (206, 136790), (412, 68395), (515, 54716), (1030, 27358), (2060, 13679)]