19904227

素因数分解:

$7^1\times {\mathrm{43}}^1\times {\mathrm{89}}^1\times {\mathrm{743}}^1$

素因数の和:882

約数の個数: 16

約数和(自身を含む): 23569920

約数和(自身を除く): 3665693

約数列:

[1, 7, 43, 89, 301, 623, 743, 3827, 5201, 26789, 31949, 66127, 223643, 462889, 2843461, 19904227]

約数ペア:

[(1, 19904227), (7, 2843461), (43, 462889), (89, 223643), (301, 66127), (623, 31949), (743, 26789), (3827, 5201)]