21221788

素因数分解:

$2^2\times 7^1\times {\mathrm{709}}^1\times {\mathrm{1069}}^1$

素因数の和:1789

約数の個数: 24

約数和(自身を含む): 42543200

約数和(自身を除く): 21321412

約数列:

[1, 2, 4, 7, 14, 28, 709, 1069, 1418, 2138, 2836, 4276, 4963, 7483, 9926, 14966, 19852, 29932, 757921, 1515842, 3031684, 5305447, 10610894, 21221788]

約数ペア:

[(1, 21221788), (2, 10610894), (4, 5305447), (7, 3031684), (14, 1515842), (28, 757921), (709, 29932), (1069, 19852), (1418, 14966), (2138, 9926), (2836, 7483), (4276, 4963)]