21193245

素因数分解:

$3^5\times 5^1\times {\mathrm{17443}}^1$

素因数の和:17463

約数の個数: 24

約数和(自身を含む): 38097696

約数和(自身を除く): 16904451

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 243, 405, 1215, 17443, 52329, 87215, 156987, 261645, 470961, 784935, 1412883, 2354805, 4238649, 7064415, 21193245]

約数ペア:

[(1, 21193245), (3, 7064415), (5, 4238649), (9, 2354805), (15, 1412883), (27, 784935), (45, 470961), (81, 261645), (135, 156987), (243, 87215), (405, 52329), (1215, 17443)]