128878060

素因数分解:

$2^2\times 5^1\times {\mathrm{6443903}}^1$

素因数の和:6443912

約数の個数: 12

約数和(自身を含む): 270643968

約数和(自身を除く): 141765908

約数列:

[1, 2, 4, 5, 10, 20, 6443903, 12887806, 25775612, 32219515, 64439030, 128878060]

約数ペア:

[(1, 128878060), (2, 64439030), (4, 32219515), (5, 25775612), (10, 12887806), (20, 6443903)]