20864726

素因数分解:

$2^1\times {\mathrm{23}}^1\times {\mathrm{409}}^1\times {\mathrm{1109}}^1$

素因数の和:1543

約数の個数: 16

約数和(自身を含む): 32767200

約数和(自身を除く): 11902474

約数列:

[1, 2, 23, 46, 409, 818, 1109, 2218, 9407, 18814, 25507, 51014, 453581, 907162, 10432363, 20864726]

約数ペア:

[(1, 20864726), (2, 10432363), (23, 907162), (46, 453581), (409, 51014), (818, 25507), (1109, 18814), (2218, 9407)]