280960040

素因数分解:

$2^3\times 5^1\times {\mathrm{487}}^1\times {\mathrm{14423}}^1$

素因数の和:14921

約数の個数: 32

約数和(自身を含む): 633502080

約数和(自身を除く): 352542040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 487, 974, 1948, 2435, 3896, 4870, 9740, 14423, 19480, 28846, 57692, 72115, 115384, 144230, 288460, 576920, 7024001, 14048002, 28096004, 35120005, 56192008, 70240010, 140480020, 280960040]

約数ペア:

[(1, 280960040), (2, 140480020), (4, 70240010), (5, 56192008), (8, 35120005), (10, 28096004), (20, 14048002), (40, 7024001), (487, 576920), (974, 288460), (1948, 144230), (2435, 115384), (3896, 72115), (4870, 57692), (9740, 28846), (14423, 19480)]