21137145

素因数分解:

$3^1\times 5^1\times {\mathrm{103}}^1\times {\mathrm{13681}}^1$

素因数の和:13792

約数の個数: 16

約数和(自身を含む): 34150272

約数和(自身を除く): 13013127

約数列:

[1, 3, 5, 15, 103, 309, 515, 1545, 13681, 41043, 68405, 205215, 1409143, 4227429, 7045715, 21137145]

約数ペア:

[(1, 21137145), (3, 7045715), (5, 4227429), (15, 1409143), (103, 205215), (309, 68405), (515, 41043), (1545, 13681)]