21704211

素因数分解:

$3^2\times {\mathrm{41}}^1\times {\mathrm{131}}^1\times {\mathrm{449}}^1$

素因数の和:627

約数の個数: 24

約数和(自身を含む): 32432400

約数和(自身を除く): 10728189

約数列:

[1, 3, 9, 41, 123, 131, 369, 393, 449, 1179, 1347, 4041, 5371, 16113, 18409, 48339, 55227, 58819, 165681, 176457, 529371, 2411579, 7234737, 21704211]

約数ペア:

[(1, 21704211), (3, 7234737), (9, 2411579), (41, 529371), (123, 176457), (131, 165681), (369, 58819), (393, 55227), (449, 48339), (1179, 18409), (1347, 16113), (4041, 5371)]