20807367

素因数分解:

$3^1\times 7^1\times {\mathrm{157}}^1\times {\mathrm{6311}}^1$

素因数の和:6478

約数の個数: 16

約数和(自身を含む): 31913472

約数和(自身を除く): 11106105

約数列:

[1, 3, 7, 21, 157, 471, 1099, 3297, 6311, 18933, 44177, 132531, 990827, 2972481, 6935789, 20807367]

約数ペア:

[(1, 20807367), (3, 6935789), (7, 2972481), (21, 990827), (157, 132531), (471, 44177), (1099, 18933), (3297, 6311)]