19784481

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{109}}^1\times {\mathrm{3559}}^1$

素因数の和:3688

約数の個数: 16

約数和(自身を含む): 28195200

約数和(自身を除く): 8410719

約数列:

[1, 3, 17, 51, 109, 327, 1853, 3559, 5559, 10677, 60503, 181509, 387931, 1163793, 6594827, 19784481]

約数ペア:

[(1, 19784481), (3, 6594827), (17, 1163793), (51, 387931), (109, 181509), (327, 60503), (1853, 10677), (3559, 5559)]