21688996

素因数分解:

$2^2\times 7^1\times {\mathrm{47}}^1\times {\mathrm{16481}}^1$

素因数の和:16539

約数の個数: 24

約数和(自身を含む): 44303616

約数和(自身を除く): 22614620

約数列:

[1, 2, 4, 7, 14, 28, 47, 94, 188, 329, 658, 1316, 16481, 32962, 65924, 115367, 230734, 461468, 774607, 1549214, 3098428, 5422249, 10844498, 21688996]

約数ペア:

[(1, 21688996), (2, 10844498), (4, 5422249), (7, 3098428), (14, 1549214), (28, 774607), (47, 461468), (94, 230734), (188, 115367), (329, 65924), (658, 32962), (1316, 16481)]