16854398420

素因数分解:

$2^2\times 5^1\times {\mathrm{842719921}}^1$

素因数の和:842719930

約数の個数: 12

約数和(自身を含む): 35394236724

約数和(自身を除く): 18539838304

約数列:

[1, 2, 4, 5, 10, 20, 842719921, 1685439842, 3370879684, 4213599605, 8427199210, 16854398420]

約数ペア:

[(1, 16854398420), (2, 8427199210), (4, 4213599605), (5, 3370879684), (10, 1685439842), (20, 842719921)]