21513828

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{256117}}^1$

素因数の和:256131

約数の個数: 24

約数和(自身を含む): 57370432

約数和(自身を除く): 35856604

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84, 256117, 512234, 768351, 1024468, 1536702, 1792819, 3073404, 3585638, 5378457, 7171276, 10756914, 21513828]

約数ペア:

[(1, 21513828), (2, 10756914), (3, 7171276), (4, 5378457), (6, 3585638), (7, 3073404), (12, 1792819), (14, 1536702), (21, 1024468), (28, 768351), (42, 512234), (84, 256117)]