207821439

素因数分解:

$3^2\times 7^1\times {\mathrm{887}}^1\times {\mathrm{3719}}^1$

素因数の和:4619

約数の個数: 24

約数和(自身を含む): 343549440

約数和(自身を除く): 135728001

約数列:

[1, 3, 7, 9, 21, 63, 887, 2661, 3719, 6209, 7983, 11157, 18627, 26033, 33471, 55881, 78099, 234297, 3298753, 9896259, 23091271, 29688777, 69273813, 207821439]

約数ペア:

[(1, 207821439), (3, 69273813), (7, 29688777), (9, 23091271), (21, 9896259), (63, 3298753), (887, 234297), (2661, 78099), (3719, 55881), (6209, 33471), (7983, 26033), (11157, 18627)]