21569828

素因数分解:

$2^2\times 7^1\times {\mathrm{137}}^1\times {\mathrm{5623}}^1$

素因数の和:5771

約数の個数: 24

約数和(自身を含む): 43462272

約数和(自身を除く): 21892444

約数列:

[1, 2, 4, 7, 14, 28, 137, 274, 548, 959, 1918, 3836, 5623, 11246, 22492, 39361, 78722, 157444, 770351, 1540702, 3081404, 5392457, 10784914, 21569828]

約数ペア:

[(1, 21569828), (2, 10784914), (4, 5392457), (7, 3081404), (14, 1540702), (28, 770351), (137, 157444), (274, 78722), (548, 39361), (959, 22492), (1918, 11246), (3836, 5623)]