21225141

素因数分解:

$3^2\times 7^1\times {\mathrm{199}}^1\times {\mathrm{1693}}^1$

素因数の和:1905

約数の個数: 24

約数和(自身を含む): 35235200

約数和(自身を除く): 14010059

約数列:

[1, 3, 7, 9, 21, 63, 199, 597, 1393, 1693, 1791, 4179, 5079, 11851, 12537, 15237, 35553, 106659, 336907, 1010721, 2358349, 3032163, 7075047, 21225141]

約数ペア:

[(1, 21225141), (3, 7075047), (7, 3032163), (9, 2358349), (21, 1010721), (63, 336907), (199, 106659), (597, 35553), (1393, 15237), (1693, 12537), (1791, 11851), (4179, 5079)]