21815682412

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{320818859}}^1$

素因数の和:320818880

約数の個数: 12

約数和(自身を含む): 40423176360

約数和(自身を除く): 18607493948

約数列:

[1, 2, 4, 17, 34, 68, 320818859, 641637718, 1283275436, 5453920603, 10907841206, 21815682412]

約数ペア:

[(1, 21815682412), (2, 10907841206), (4, 5453920603), (17, 1283275436), (34, 641637718), (68, 320818859)]