12661520

素因数分解:

$2^4\times 5^1\times {\mathrm{158269}}^1$

素因数の和:158282

約数の個数: 20

約数和(自身を含む): 29438220

約数和(自身を除く): 16776700

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 158269, 316538, 633076, 791345, 1266152, 1582690, 2532304, 3165380, 6330760, 12661520]

約数ペア:

[(1, 12661520), (2, 6330760), (4, 3165380), (5, 2532304), (8, 1582690), (10, 1266152), (16, 791345), (20, 633076), (40, 316538), (80, 158269)]