20972170

素因数分解:

$2^1\times 5^1\times {\mathrm{73}}^1\times {\mathrm{28729}}^1$

素因数の和:28809

約数の個数: 16

約数和(自身を含む): 38268360

約数和(自身を除く): 17296190

約数列:

[1, 2, 5, 10, 73, 146, 365, 730, 28729, 57458, 143645, 287290, 2097217, 4194434, 10486085, 20972170]

約数ペア:

[(1, 20972170), (2, 10486085), (5, 4194434), (10, 2097217), (73, 287290), (146, 143645), (365, 57458), (730, 28729)]