40770640

素因数分解:

$2^4\times 5^1\times {\mathrm{509633}}^1$

素因数の和:509646

約数の個数: 20

約数和(自身を含む): 94791924

約数和(自身を除く): 54021284

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 509633, 1019266, 2038532, 2548165, 4077064, 5096330, 8154128, 10192660, 20385320, 40770640]

約数ペア:

[(1, 40770640), (2, 20385320), (4, 10192660), (5, 8154128), (8, 5096330), (10, 4077064), (16, 2548165), (20, 2038532), (40, 1019266), (80, 509633)]