21560973

素因数分解:

$3^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{27749}}^1$

素因数の和:27796

約数の個数: 16

約数和(自身を含む): 33744000

約数和(自身を除く): 12183027

約数列:

[1, 3, 7, 21, 37, 111, 259, 777, 27749, 83247, 194243, 582729, 1026713, 3080139, 7186991, 21560973]

約数ペア:

[(1, 21560973), (3, 7186991), (7, 3080139), (21, 1026713), (37, 582729), (111, 194243), (259, 83247), (777, 27749)]