20581240

素因数分解:

$2^3\times 5^1\times {\mathrm{514531}}^1$

素因数の和:514542

約数の個数: 16

約数和(自身を含む): 46307880

約数和(自身を除く): 25726640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 514531, 1029062, 2058124, 2572655, 4116248, 5145310, 10290620, 20581240]

約数ペア:

[(1, 20581240), (2, 10290620), (4, 5145310), (5, 4116248), (8, 2572655), (10, 2058124), (20, 1029062), (40, 514531)]