21891772

素因数分解:

$2^2\times 7^1\times {\mathrm{107}}^1\times {\mathrm{7307}}^1$

素因数の和:7425

約数の個数: 24

約数和(自身を含む): 44198784

約数和(自身を除く): 22307012

約数列:

[1, 2, 4, 7, 14, 28, 107, 214, 428, 749, 1498, 2996, 7307, 14614, 29228, 51149, 102298, 204596, 781849, 1563698, 3127396, 5472943, 10945886, 21891772]

約数ペア:

[(1, 21891772), (2, 10945886), (4, 5472943), (7, 3127396), (14, 1563698), (28, 781849), (107, 204596), (214, 102298), (428, 51149), (749, 29228), (1498, 14614), (2996, 7307)]