21107779

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{39161}}^1$

素因数の和:39186

約数の個数: 12

約数和(自身を含む): 26786808

約数和(自身を除く): 5679029

約数列:

[1, 7, 11, 49, 77, 539, 39161, 274127, 430771, 1918889, 3015397, 21107779]

約数ペア:

[(1, 21107779), (7, 3015397), (11, 1918889), (49, 430771), (77, 274127), (539, 39161)]