19993897

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{3557}}^1$

素因数の和:3648

約数の個数: 16

約数和(自身を含む): 25276032

約数和(自身を除く): 5282135

約数列:

[1, 7, 11, 73, 77, 511, 803, 3557, 5621, 24899, 39127, 259661, 273889, 1817627, 2856271, 19993897]

約数ペア:

[(1, 19993897), (7, 2856271), (11, 1817627), (73, 273889), (77, 259661), (511, 39127), (803, 24899), (3557, 5621)]