28109405

素因数分解:

$5^1\times {\mathrm{31}}^1\times {\mathrm{151}}^1\times {\mathrm{1201}}^1$

素因数の和:1388

約数の個数: 16

約数和(自身を含む): 35079168

約数和(自身を除く): 6969763

約数列:

[1, 5, 31, 151, 155, 755, 1201, 4681, 6005, 23405, 37231, 181351, 186155, 906755, 5621881, 28109405]

約数ペア:

[(1, 28109405), (5, 5621881), (31, 906755), (151, 186155), (155, 181351), (755, 37231), (1201, 23405), (4681, 6005)]