21255021

素因数分解:

$3^3\times {\mathrm{701}}^1\times {\mathrm{1123}}^1$

素因数の和:1833

約数の個数: 16

約数和(自身を含む): 31561920

約数和(自身を除く): 10306899

約数列:

[1, 3, 9, 27, 701, 1123, 2103, 3369, 6309, 10107, 18927, 30321, 787223, 2361669, 7085007, 21255021]

約数ペア:

[(1, 21255021), (3, 7085007), (9, 2361669), (27, 787223), (701, 30321), (1123, 18927), (2103, 10107), (3369, 6309)]