19781266

素因数分解:

$2^1\times {\mathrm{47}}^1\times {\mathrm{127}}^1\times {\mathrm{1657}}^1$

素因数の和:1833

約数の個数: 16

約数和(自身を含む): 30560256

約数和(自身を除く): 10778990

約数列:

[1, 2, 47, 94, 127, 254, 1657, 3314, 5969, 11938, 77879, 155758, 210439, 420878, 9890633, 19781266]

約数ペア:

[(1, 19781266), (2, 9890633), (47, 420878), (94, 210439), (127, 155758), (254, 77879), (1657, 11938), (3314, 5969)]