18906559

素因数分解:

$7^1\times {\mathrm{31}}^1\times {\mathrm{151}}^1\times {\mathrm{577}}^1$

素因数の和:766

約数の個数: 16

約数和(自身を含む): 22491136

約数和(自身を除く): 3584577

約数列:

[1, 7, 31, 151, 217, 577, 1057, 4039, 4681, 17887, 32767, 87127, 125209, 609889, 2700937, 18906559]

約数ペア:

[(1, 18906559), (7, 2700937), (31, 609889), (151, 125209), (217, 87127), (577, 32767), (1057, 17887), (4039, 4681)]