28679945

素因数分解:

$5^1\times 7^4\times {\mathrm{2389}}^1$

素因数の和:2422

約数の個数: 20

約数和(自身を含む): 40166340

約数和(自身を除く): 11486395

約数列:

[1, 5, 7, 35, 49, 245, 343, 1715, 2389, 2401, 11945, 12005, 16723, 83615, 117061, 585305, 819427, 4097135, 5735989, 28679945]

約数ペア:

[(1, 28679945), (5, 5735989), (7, 4097135), (35, 819427), (49, 585305), (245, 117061), (343, 83615), (1715, 16723), (2389, 12005), (2401, 11945)]