28781319

素因数分解:

$3^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{31873}}^1$

素因数の和:31926

約数の個数: 16

約数和(自身を含む): 44878592

約数和(自身を除く): 16097273

約数列:

[1, 3, 7, 21, 43, 129, 301, 903, 31873, 95619, 223111, 669333, 1370539, 4111617, 9593773, 28781319]

約数ペア:

[(1, 28781319), (3, 9593773), (7, 4111617), (21, 1370539), (43, 669333), (129, 223111), (301, 95619), (903, 31873)]