28704590

素因数分解:

$2^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{40429}}^1$

素因数の和:40507

約数の個数: 16

約数和(自身を含む): 52397280

約数和(自身を除く): 23692690

約数列:

[1, 2, 5, 10, 71, 142, 355, 710, 40429, 80858, 202145, 404290, 2870459, 5740918, 14352295, 28704590]

約数ペア:

[(1, 28704590), (2, 14352295), (5, 5740918), (10, 2870459), (71, 404290), (142, 202145), (355, 80858), (710, 40429)]