1284455420

素因数分解:

$2^2\times 5^1\times {\mathrm{64222771}}^1$

素因数の和:64222780

約数の個数: 12

約数和(自身を含む): 2697356424

約数和(自身を除く): 1412901004

約数列:

[1, 2, 4, 5, 10, 20, 64222771, 128445542, 256891084, 321113855, 642227710, 1284455420]

約数ペア:

[(1, 1284455420), (2, 642227710), (4, 321113855), (5, 256891084), (10, 128445542), (20, 64222771)]