1330685420

素因数分解:

$2^2\times 5^1\times {\mathrm{66534271}}^1$

素因数の和:66534280

約数の個数: 12

約数和(自身を含む): 2794439424

約数和(自身を除く): 1463754004

約数列:

[1, 2, 4, 5, 10, 20, 66534271, 133068542, 266137084, 332671355, 665342710, 1330685420]

約数ペア:

[(1, 1330685420), (2, 665342710), (4, 332671355), (5, 266137084), (10, 133068542), (20, 66534271)]