18712017

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{73}}^1\times {\mathrm{1499}}^1$

素因数の和:1597

約数の個数: 24

約数和(自身を含む): 28860000

約数和(自身を除く): 10147983

約数列:

[1, 3, 9, 19, 57, 73, 171, 219, 657, 1387, 1499, 4161, 4497, 12483, 13491, 28481, 85443, 109427, 256329, 328281, 984843, 2079113, 6237339, 18712017]

約数ペア:

[(1, 18712017), (3, 6237339), (9, 2079113), (19, 984843), (57, 328281), (73, 256329), (171, 109427), (219, 85443), (657, 28481), (1387, 13491), (1499, 12483), (4161, 4497)]