21456681

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{12143}}^1$

素因数の和:12196

約数の個数: 16

約数和(自身を含む): 31088640

約数和(自身を除く): 9631959

約数列:

[1, 3, 19, 31, 57, 93, 589, 1767, 12143, 36429, 230717, 376433, 692151, 1129299, 7152227, 21456681]

約数ペア:

[(1, 21456681), (3, 7152227), (19, 1129299), (31, 692151), (57, 376433), (93, 230717), (589, 36429), (1767, 12143)]