20517260

素因数分解:

$2^2\times 5^1\times {\mathrm{653}}^1\times {\mathrm{1571}}^1$

素因数の和:2233

約数の個数: 24

約数和(自身を含む): 43179696

約数和(自身を除く): 22662436

約数列:

[1, 2, 4, 5, 10, 20, 653, 1306, 1571, 2612, 3142, 3265, 6284, 6530, 7855, 13060, 15710, 31420, 1025863, 2051726, 4103452, 5129315, 10258630, 20517260]

約数ペア:

[(1, 20517260), (2, 10258630), (4, 5129315), (5, 4103452), (10, 2051726), (20, 1025863), (653, 31420), (1306, 15710), (1571, 13060), (2612, 7855), (3142, 6530), (3265, 6284)]