20518399

素因数分解:

${\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{131}}^1\times {\mathrm{491}}^1$

素因数の和:662

約数の個数: 16

約数和(自身を含む): 23379840

約数和(自身を除く): 2861441

約数列:

[1, 11, 29, 131, 319, 491, 1441, 3799, 5401, 14239, 41789, 64321, 156629, 707531, 1865309, 20518399]

約数ペア:

[(1, 20518399), (11, 1865309), (29, 707531), (131, 156629), (319, 64321), (491, 41789), (1441, 14239), (3799, 5401)]