71991280

素因数分解:

$2^4\times 5^1\times {\mathrm{899891}}^1$

素因数の和:899904

約数の個数: 20

約数和(自身を含む): 167379912

約数和(自身を除く): 95388632

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 899891, 1799782, 3599564, 4499455, 7199128, 8998910, 14398256, 17997820, 35995640, 71991280]

約数ペア:

[(1, 71991280), (2, 35995640), (4, 17997820), (5, 14398256), (8, 8998910), (10, 7199128), (16, 4499455), (20, 3599564), (40, 1799782), (80, 899891)]