21742425

素因数分解:

$3^6\times 5^2\times {\mathrm{1193}}^1$

素因数の和:1221

約数の個数: 42

約数和(自身を含む): 40456302

約数和(自身を除く): 18713877

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 75, 81, 135, 225, 243, 405, 675, 729, 1193, 1215, 2025, 3579, 3645, 5965, 6075, 10737, 17895, 18225, 29825, 32211, 53685, 89475, 96633, 161055, 268425, 289899, 483165, 805275, 869697, 1449495, 2415825, 4348485, 7247475, 21742425]

約数ペア:

[(1, 21742425), (3, 7247475), (5, 4348485), (9, 2415825), (15, 1449495), (25, 869697), (27, 805275), (45, 483165), (75, 289899), (81, 268425), (135, 161055), (225, 96633), (243, 89475), (405, 53685), (675, 32211), (729, 29825), (1193, 18225), (1215, 17895), (2025, 10737), (3579, 6075), (3645, 5965)]