19746640

素因数分解:

$2^4\times 5^1\times {\mathrm{246833}}^1$

素因数の和:246846

約数の個数: 20

約数和(自身を含む): 45911124

約数和(自身を除く): 26164484

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 246833, 493666, 987332, 1234165, 1974664, 2468330, 3949328, 4936660, 9873320, 19746640]

約数ペア:

[(1, 19746640), (2, 9873320), (4, 4936660), (5, 3949328), (8, 2468330), (10, 1974664), (16, 1234165), (20, 987332), (40, 493666), (80, 246833)]