21192140

素因数分解:

$2^2\times 5^1\times {\mathrm{919}}^1\times {\mathrm{1153}}^1$

素因数の和:2081

約数の個数: 24

約数和(自身を含む): 44590560

約数和(自身を除く): 23398420

約数列:

[1, 2, 4, 5, 10, 20, 919, 1153, 1838, 2306, 3676, 4595, 4612, 5765, 9190, 11530, 18380, 23060, 1059607, 2119214, 4238428, 5298035, 10596070, 21192140]

約数ペア:

[(1, 21192140), (2, 10596070), (4, 5298035), (5, 4238428), (10, 2119214), (20, 1059607), (919, 23060), (1153, 18380), (1838, 11530), (2306, 9190), (3676, 5765), (4595, 4612)]