21125986

素因数分解:

$2^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{1847}}^1$

素因数の和:1918

約数の個数: 32

約数和(自身を含む): 39029760

約数和(自身を除く): 17903774

約数列:

[1, 2, 7, 14, 19, 38, 43, 86, 133, 266, 301, 602, 817, 1634, 1847, 3694, 5719, 11438, 12929, 25858, 35093, 70186, 79421, 158842, 245651, 491302, 555947, 1111894, 1508999, 3017998, 10562993, 21125986]

約数ペア:

[(1, 21125986), (2, 10562993), (7, 3017998), (14, 1508999), (19, 1111894), (38, 555947), (43, 491302), (86, 245651), (133, 158842), (266, 79421), (301, 70186), (602, 35093), (817, 25858), (1634, 12929), (1847, 11438), (3694, 5719)]