18808225420

素因数分解:

$2^2\times 5^1\times {\mathrm{940411271}}^1$

素因数の和:940411280

約数の個数: 12

約数和(自身を含む): 39497273424

約数和(自身を除く): 20689048004

約数列:

[1, 2, 4, 5, 10, 20, 940411271, 1880822542, 3761645084, 4702056355, 9404112710, 18808225420]

約数ペア:

[(1, 18808225420), (2, 9404112710), (4, 4702056355), (5, 3761645084), (10, 1880822542), (20, 940411271)]