19902718

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{431}}^1\times {\mathrm{2099}}^1$

素因数の和:2543

約数の個数: 16

約数和(自身を含む): 32659200

約数和(自身を除く): 12756482

約数列:

[1, 2, 11, 22, 431, 862, 2099, 4198, 4741, 9482, 23089, 46178, 904669, 1809338, 9951359, 19902718]

約数ペア:

[(1, 19902718), (2, 9951359), (11, 1809338), (22, 904669), (431, 46178), (862, 23089), (2099, 9482), (4198, 4741)]