15906640

素因数分解:

$2^4\times 5^1\times {\mathrm{198833}}^1$

素因数の和:198846

約数の個数: 20

約数和(自身を含む): 36983124

約数和(自身を除く): 21076484

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 198833, 397666, 795332, 994165, 1590664, 1988330, 3181328, 3976660, 7953320, 15906640]

約数ペア:

[(1, 15906640), (2, 7953320), (4, 3976660), (5, 3181328), (8, 1988330), (10, 1590664), (16, 994165), (20, 795332), (40, 397666), (80, 198833)]