21605790

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{720193}}^1$

素因数の和:720203

約数の個数: 16

約数和(自身を含む): 51853968

約数和(自身を除く): 30248178

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 720193, 1440386, 2160579, 3600965, 4321158, 7201930, 10802895, 21605790]

約数ペア:

[(1, 21605790), (2, 10802895), (3, 7201930), (5, 4321158), (6, 3600965), (10, 2160579), (15, 1440386), (30, 720193)]