19807898

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{431}}^1\times {\mathrm{2089}}^1$

素因数の和:2533

約数の個数: 16

約数和(自身を含む): 32503680

約数和(自身を除く): 12695782

約数列:

[1, 2, 11, 22, 431, 862, 2089, 4178, 4741, 9482, 22979, 45958, 900359, 1800718, 9903949, 19807898]

約数ペア:

[(1, 19807898), (2, 9903949), (11, 1800718), (22, 900359), (431, 45958), (862, 22979), (2089, 9482), (4178, 4741)]