21966651

素因数分解:

$3^2\times 7^2\times {\mathrm{49811}}^1$

素因数の和:49831

約数の個数: 18

約数和(自身を含む): 36910692

約数和(自身を除く): 14944041

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 49811, 149433, 348677, 448299, 1046031, 2440739, 3138093, 7322217, 21966651]

約数ペア:

[(1, 21966651), (3, 7322217), (7, 3138093), (9, 2440739), (21, 1046031), (49, 448299), (63, 348677), (147, 149433), (441, 49811)]