19216978

素因数分解:

$2^1\times {\mathrm{11}}^3\times {\mathrm{7219}}^1$

素因数の和:7254

約数の個数: 16

約数和(自身を含む): 31710240

約数和(自身を除く): 12493262

約数列:

[1, 2, 11, 22, 121, 242, 1331, 2662, 7219, 14438, 79409, 158818, 873499, 1746998, 9608489, 19216978]

約数ペア:

[(1, 19216978), (2, 9608489), (11, 1746998), (22, 873499), (121, 158818), (242, 79409), (1331, 14438), (2662, 7219)]