21459501

素因数分解:

$3^2\times 7^2\times {\mathrm{48661}}^1$

素因数の和:48681

約数の個数: 18

約数和(自身を含む): 36058542

約数和(自身を除く): 14599041

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 48661, 145983, 340627, 437949, 1021881, 2384389, 3065643, 7153167, 21459501]

約数ペア:

[(1, 21459501), (3, 7153167), (7, 3065643), (9, 2384389), (21, 1021881), (49, 437949), (63, 340627), (147, 145983), (441, 48661)]