20851516

素因数分解:

$2^2\times 7^1\times {\mathrm{647}}^1\times {\mathrm{1151}}^1$

素因数の和:1809

約数の個数: 24

約数和(自身を含む): 41803776

約数和(自身を除く): 20952260

約数列:

[1, 2, 4, 7, 14, 28, 647, 1151, 1294, 2302, 2588, 4529, 4604, 8057, 9058, 16114, 18116, 32228, 744697, 1489394, 2978788, 5212879, 10425758, 20851516]

約数ペア:

[(1, 20851516), (2, 10425758), (4, 5212879), (7, 2978788), (14, 1489394), (28, 744697), (647, 32228), (1151, 18116), (1294, 16114), (2302, 9058), (2588, 8057), (4529, 4604)]