21216885

素因数分解:

$3^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{34499}}^1$

素因数の和:34548

約数の個数: 16

約数和(自身を含む): 34776000

約数和(自身を除く): 13559115

約数列:

[1, 3, 5, 15, 41, 123, 205, 615, 34499, 103497, 172495, 517485, 1414459, 4243377, 7072295, 21216885]

約数ペア:

[(1, 21216885), (3, 7072295), (5, 4243377), (15, 1414459), (41, 517485), (123, 172495), (205, 103497), (615, 34499)]