12421520

素因数分解:

$2^4\times 5^1\times {\mathrm{155269}}^1$

素因数の和:155282

約数の個数: 20

約数和(自身を含む): 28880220

約数和(自身を除く): 16458700

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 155269, 310538, 621076, 776345, 1242152, 1552690, 2484304, 3105380, 6210760, 12421520]

約数ペア:

[(1, 12421520), (2, 6210760), (4, 3105380), (5, 2484304), (8, 1552690), (10, 1242152), (16, 776345), (20, 621076), (40, 310538), (80, 155269)]