85811020

素因数分解:

$2^2\times 5^1\times {\mathrm{661}}^1\times {\mathrm{6491}}^1$

素因数の和:7161

約数の個数: 24

約数和(自身を含む): 180503568

約数和(自身を除く): 94692548

約数列:

[1, 2, 4, 5, 10, 20, 661, 1322, 2644, 3305, 6491, 6610, 12982, 13220, 25964, 32455, 64910, 129820, 4290551, 8581102, 17162204, 21452755, 42905510, 85811020]

約数ペア:

[(1, 85811020), (2, 42905510), (4, 21452755), (5, 17162204), (10, 8581102), (20, 4290551), (661, 129820), (1322, 64910), (2644, 32455), (3305, 25964), (6491, 13220), (6610, 12982)]