28207945

素因数分解:

$5^1\times {\mathrm{71}}^1\times {\mathrm{181}}^1\times {\mathrm{439}}^1$

素因数の和:696

約数の個数: 16

約数和(自身を含む): 34594560

約数和(自身を除く): 6386615

約数列:

[1, 5, 71, 181, 355, 439, 905, 2195, 12851, 31169, 64255, 79459, 155845, 397295, 5641589, 28207945]

約数ペア:

[(1, 28207945), (5, 5641589), (71, 397295), (181, 155845), (355, 79459), (439, 64255), (905, 31169), (2195, 12851)]