20778709

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{283}}^1\times {\mathrm{617}}^1$

素因数の和:924

約数の個数: 16

約数和(自身を含む): 25273728

約数和(自身を除く): 4495019

約数列:

[1, 7, 17, 119, 283, 617, 1981, 4319, 4811, 10489, 33677, 73423, 174611, 1222277, 2968387, 20778709]

約数ペア:

[(1, 20778709), (7, 2968387), (17, 1222277), (119, 174611), (283, 73423), (617, 33677), (1981, 10489), (4319, 4811)]