21563836

素因数分解:

$2^2\times 7^1\times {\mathrm{71}}^1\times {\mathrm{10847}}^1$

素因数の和:10929

約数の個数: 24

約数和(自身を含む): 43739136

約数和(自身を除く): 22175300

約数列:

[1, 2, 4, 7, 14, 28, 71, 142, 284, 497, 994, 1988, 10847, 21694, 43388, 75929, 151858, 303716, 770137, 1540274, 3080548, 5390959, 10781918, 21563836]

約数ペア:

[(1, 21563836), (2, 10781918), (4, 5390959), (7, 3080548), (14, 1540274), (28, 770137), (71, 303716), (142, 151858), (284, 75929), (497, 43388), (994, 21694), (1988, 10847)]