19441780

素因数分解:

$2^2\times 5^1\times {\mathrm{421}}^1\times {\mathrm{2309}}^1$

素因数の和:2739

約数の個数: 24

約数和(自身を含む): 40942440

約数和(自身を除く): 21500660

約数列:

[1, 2, 4, 5, 10, 20, 421, 842, 1684, 2105, 2309, 4210, 4618, 8420, 9236, 11545, 23090, 46180, 972089, 1944178, 3888356, 4860445, 9720890, 19441780]

約数ペア:

[(1, 19441780), (2, 9720890), (4, 4860445), (5, 3888356), (10, 1944178), (20, 972089), (421, 46180), (842, 23090), (1684, 11545), (2105, 9236), (2309, 8420), (4210, 4618)]