21513268

素因数分解:

$2^2\times 7^1\times {\mathrm{83}}^1\times {\mathrm{9257}}^1$

素因数の和:9351

約数の個数: 24

約数和(自身を含む): 43549632

約数和(自身を除く): 22036364

約数列:

[1, 2, 4, 7, 14, 28, 83, 166, 332, 581, 1162, 2324, 9257, 18514, 37028, 64799, 129598, 259196, 768331, 1536662, 3073324, 5378317, 10756634, 21513268]

約数ペア:

[(1, 21513268), (2, 10756634), (4, 5378317), (7, 3073324), (14, 1536662), (28, 768331), (83, 259196), (166, 129598), (332, 64799), (581, 37028), (1162, 18514), (2324, 9257)]