21552503

素因数分解:

$7^2\times {\mathrm{43}}^1\times {\mathrm{53}}^1\times {\mathrm{193}}^1$

素因数の和:303

約数の個数: 24

約数和(自身を含む): 26273808

約数和(自身を除く): 4721305

約数列:

[1, 7, 43, 49, 53, 193, 301, 371, 1351, 2107, 2279, 2597, 8299, 9457, 10229, 15953, 58093, 71603, 111671, 406651, 439847, 501221, 3078929, 21552503]

約数ペア:

[(1, 21552503), (7, 3078929), (43, 501221), (49, 439847), (53, 406651), (193, 111671), (301, 71603), (371, 58093), (1351, 15953), (2107, 10229), (2279, 9457), (2597, 8299)]