81920120

素因数分解:

$2^3\times 5^1\times {\mathrm{2048003}}^1$

素因数の和:2048014

約数の個数: 16

約数和(自身を含む): 184320360

約数和(自身を除く): 102400240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 2048003, 4096006, 8192012, 10240015, 16384024, 20480030, 40960060, 81920120]

約数ペア:

[(1, 81920120), (2, 40960060), (4, 20480030), (5, 16384024), (8, 10240015), (10, 8192012), (20, 4096006), (40, 2048003)]