21020259

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{157}}^1\times {\mathrm{3433}}^1$

素因数の和:3606

約数の個数: 16

約数和(自身を含む): 30384032

約数和(自身を除く): 9363773

約数列:

[1, 3, 13, 39, 157, 471, 2041, 3433, 6123, 10299, 44629, 133887, 538981, 1616943, 7006753, 21020259]

約数ペア:

[(1, 21020259), (3, 7006753), (13, 1616943), (39, 538981), (157, 133887), (471, 44629), (2041, 10299), (3433, 6123)]