21601251

素因数分解:

$3^2\times 7^1\times {\mathrm{199}}^1\times {\mathrm{1723}}^1$

素因数の和:1935

約数の個数: 24

約数和(自身を含む): 35859200

約数和(自身を除く): 14257949

約数列:

[1, 3, 7, 9, 21, 63, 199, 597, 1393, 1723, 1791, 4179, 5169, 12061, 12537, 15507, 36183, 108549, 342877, 1028631, 2400139, 3085893, 7200417, 21601251]

約数ペア:

[(1, 21601251), (3, 7200417), (7, 3085893), (9, 2400139), (21, 1028631), (63, 342877), (199, 108549), (597, 36183), (1393, 15507), (1723, 12537), (1791, 12061), (4179, 5169)]