51141520

素因数分解:

$2^4\times 5^1\times {\mathrm{639269}}^1$

素因数の和:639282

約数の個数: 20

約数和(自身を含む): 118904220

約数和(自身を除く): 67762700

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 639269, 1278538, 2557076, 3196345, 5114152, 6392690, 10228304, 12785380, 25570760, 51141520]

約数ペア:

[(1, 51141520), (2, 25570760), (4, 12785380), (5, 10228304), (8, 6392690), (10, 5114152), (16, 3196345), (20, 2557076), (40, 1278538), (80, 639269)]