13291020620

素因数分解:

$2^2\times 5^1\times {\mathrm{664551031}}^1$

素因数の和:664551040

約数の個数: 12

約数和(自身を含む): 27911143344

約数和(自身を除く): 14620122724

約数列:

[1, 2, 4, 5, 10, 20, 664551031, 1329102062, 2658204124, 3322755155, 6645510310, 13291020620]

約数ペア:

[(1, 13291020620), (2, 6645510310), (4, 3322755155), (5, 2658204124), (10, 1329102062), (20, 664551031)]