18780213

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{5791}}^1$

素因数の和:5864

約数の個数: 16

約数和(自身を含む): 26689536

約数和(自身を除く): 7909323

約数列:

[1, 3, 23, 47, 69, 141, 1081, 3243, 5791, 17373, 133193, 272177, 399579, 816531, 6260071, 18780213]

約数ペア:

[(1, 18780213), (3, 6260071), (23, 816531), (47, 399579), (69, 272177), (141, 133193), (1081, 17373), (3243, 5791)]