21938728

素因数分解:

$2^3\times 7^1\times {\mathrm{347}}^1\times {\mathrm{1129}}^1$

素因数の和:1489

約数の個数: 32

約数和(自身を含む): 47188800

約数和(自身を除く): 25250072

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 347, 694, 1129, 1388, 2258, 2429, 2776, 4516, 4858, 7903, 9032, 9716, 15806, 19432, 31612, 63224, 391763, 783526, 1567052, 2742341, 3134104, 5484682, 10969364, 21938728]

約数ペア:

[(1, 21938728), (2, 10969364), (4, 5484682), (7, 3134104), (8, 2742341), (14, 1567052), (28, 783526), (56, 391763), (347, 63224), (694, 31612), (1129, 19432), (1388, 15806), (2258, 9716), (2429, 9032), (2776, 7903), (4516, 4858)]