66627640

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{38737}}^1$

素因数の和:38791

約数の個数: 32

約数和(自身を含む): 153402480

約数和(自身を除く): 86774840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 38737, 77474, 154948, 193685, 309896, 387370, 774740, 1549480, 1665691, 3331382, 6662764, 8328455, 13325528, 16656910, 33313820, 66627640]

約数ペア:

[(1, 66627640), (2, 33313820), (4, 16656910), (5, 13325528), (8, 8328455), (10, 6662764), (20, 3331382), (40, 1665691), (43, 1549480), (86, 774740), (172, 387370), (215, 309896), (344, 193685), (430, 154948), (860, 77474), (1720, 38737)]