85643780

素因数分解:

$2^2\times 5^1\times {\mathrm{197}}^1\times {\mathrm{21737}}^1$

素因数の和:21943

約数の個数: 24

約数和(自身を含む): 180773208

約数和(自身を除く): 95129428

約数列:

[1, 2, 4, 5, 10, 20, 197, 394, 788, 985, 1970, 3940, 21737, 43474, 86948, 108685, 217370, 434740, 4282189, 8564378, 17128756, 21410945, 42821890, 85643780]

約数ペア:

[(1, 85643780), (2, 42821890), (4, 21410945), (5, 17128756), (10, 8564378), (20, 4282189), (197, 434740), (394, 217370), (788, 108685), (985, 86948), (1970, 43474), (3940, 21737)]