20879481

素因数分解:

$3^1\times 7^1\times {\mathrm{809}}^1\times {\mathrm{1229}}^1$

素因数の和:2048

約数の個数: 16

約数和(自身を含む): 31881600

約数和(自身を除く): 11002119

約数列:

[1, 3, 7, 21, 809, 1229, 2427, 3687, 5663, 8603, 16989, 25809, 994261, 2982783, 6959827, 20879481]

約数ペア:

[(1, 20879481), (3, 6959827), (7, 2982783), (21, 994261), (809, 25809), (1229, 16989), (2427, 8603), (3687, 5663)]