28204743

素因数分解:

$3^1\times 7^2\times {\mathrm{313}}^1\times {\mathrm{613}}^1$

素因数の和:943

約数の個数: 24

約数和(自身を含む): 43957488

約数和(自身を除く): 15752745

約数列:

[1, 3, 7, 21, 49, 147, 313, 613, 939, 1839, 2191, 4291, 6573, 12873, 15337, 30037, 46011, 90111, 191869, 575607, 1343083, 4029249, 9401581, 28204743]

約数ペア:

[(1, 28204743), (3, 9401581), (7, 4029249), (21, 1343083), (49, 575607), (147, 191869), (313, 90111), (613, 46011), (939, 30037), (1839, 15337), (2191, 12873), (4291, 6573)]