21690164

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{307}}^1\times {\mathrm{1039}}^1$

素因数の和:1367

約数の個数: 24

約数和(自身を含む): 40360320

約数和(自身を除く): 18670156

約数列:

[1, 2, 4, 17, 34, 68, 307, 614, 1039, 1228, 2078, 4156, 5219, 10438, 17663, 20876, 35326, 70652, 318973, 637946, 1275892, 5422541, 10845082, 21690164]

約数ペア:

[(1, 21690164), (2, 10845082), (4, 5422541), (17, 1275892), (34, 637946), (68, 318973), (307, 70652), (614, 35326), (1039, 20876), (1228, 17663), (2078, 10438), (4156, 5219)]