20409525

素因数分解:

$3^2\times 5^2\times {\mathrm{90709}}^1$

素因数の和:90725

約数の個数: 18

約数和(自身を含む): 36556130

約数和(自身を除く): 16146605

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 225, 90709, 272127, 453545, 816381, 1360635, 2267725, 4081905, 6803175, 20409525]

約数ペア:

[(1, 20409525), (3, 6803175), (5, 4081905), (9, 2267725), (15, 1360635), (25, 816381), (45, 453545), (75, 272127), (225, 90709)]