199778817

素因数分解:

$3^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{221239}}^1$

素因数の和:221292

約数の個数: 16

約数和(自身を含む): 311505920

約数和(自身を除く): 111727103

約数列:

[1, 3, 7, 21, 43, 129, 301, 903, 221239, 663717, 1548673, 4646019, 9513277, 28539831, 66592939, 199778817]

約数ペア:

[(1, 199778817), (3, 66592939), (7, 28539831), (21, 9513277), (43, 4646019), (129, 1548673), (301, 663717), (903, 221239)]