19085420

素因数分解:

$2^2\times 5^1\times {\mathrm{691}}^1\times {\mathrm{1381}}^1$

素因数の和:2081

約数の個数: 24

約数和(自身を含む): 40166448

約数和(自身を除く): 21081028

約数列:

[1, 2, 4, 5, 10, 20, 691, 1381, 1382, 2762, 2764, 3455, 5524, 6905, 6910, 13810, 13820, 27620, 954271, 1908542, 3817084, 4771355, 9542710, 19085420]

約数ペア:

[(1, 19085420), (2, 9542710), (4, 4771355), (5, 3817084), (10, 1908542), (20, 954271), (691, 27620), (1381, 13820), (1382, 13810), (2762, 6910), (2764, 6905), (3455, 5524)]