21920120

素因数分解:

$2^3\times 5^1\times {\mathrm{548003}}^1$

素因数の和:548014

約数の個数: 16

約数和(自身を含む): 49320360

約数和(自身を除く): 27400240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 548003, 1096006, 2192012, 2740015, 4384024, 5480030, 10960060, 21920120]

約数ペア:

[(1, 21920120), (2, 10960060), (4, 5480030), (5, 4384024), (8, 2740015), (10, 2192012), (20, 1096006), (40, 548003)]