21199491

素因数分解:

$3^2\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{2179}}^1$

素因数の和:2255

約数の個数: 24

約数和(自身を含む): 32647680

約数和(自身を除く): 11448189

約数列:

[1, 3, 9, 23, 47, 69, 141, 207, 423, 1081, 2179, 3243, 6537, 9729, 19611, 50117, 102413, 150351, 307239, 451053, 921717, 2355499, 7066497, 21199491]

約数ペア:

[(1, 21199491), (3, 7066497), (9, 2355499), (23, 921717), (47, 451053), (69, 307239), (141, 150351), (207, 102413), (423, 50117), (1081, 19611), (2179, 9729), (3243, 6537)]