20813372

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{307}}^1\times {\mathrm{997}}^1$

素因数の和:1325

約数の個数: 24

約数和(自身を含む): 38730384

約数和(自身を除く): 17917012

約数列:

[1, 2, 4, 17, 34, 68, 307, 614, 997, 1228, 1994, 3988, 5219, 10438, 16949, 20876, 33898, 67796, 306079, 612158, 1224316, 5203343, 10406686, 20813372]

約数ペア:

[(1, 20813372), (2, 10406686), (4, 5203343), (17, 1224316), (34, 612158), (68, 306079), (307, 67796), (614, 33898), (997, 20876), (1228, 16949), (1994, 10438), (3988, 5219)]