51661040

素因数分解:

$2^4\times 5^1\times {\mathrm{645763}}^1$

素因数の和:645776

約数の個数: 20

約数和(自身を含む): 120112104

約数和(自身を除く): 68451064

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 645763, 1291526, 2583052, 3228815, 5166104, 6457630, 10332208, 12915260, 25830520, 51661040]

約数ペア:

[(1, 51661040), (2, 25830520), (4, 12915260), (5, 10332208), (8, 6457630), (10, 5166104), (16, 3228815), (20, 2583052), (40, 1291526), (80, 645763)]