21031396085

素因数分解:

$5^1\times 7^2\times {\mathrm{61}}^1\times {\mathrm{1407253}}^1$

素因数の和:1407333

約数の個数: 24

約数和(自身を含む): 29839413816

約数和(自身を除く): 8808017731

約数列:

[1, 5, 7, 35, 49, 61, 245, 305, 427, 2135, 2989, 14945, 1407253, 7036265, 9850771, 49253855, 68955397, 85842433, 344776985, 429212165, 600897031, 3004485155, 4206279217, 21031396085]

約数ペア:

[(1, 21031396085), (5, 4206279217), (7, 3004485155), (35, 600897031), (49, 429212165), (61, 344776985), (245, 85842433), (305, 68955397), (427, 49253855), (2135, 9850771), (2989, 7036265), (14945, 1407253)]