21887278

素因数分解:

$2^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{107}}^1\times {\mathrm{769}}^1$

素因数の和:904

約数の個数: 32

約数和(自身を含む): 39916800

約数和(自身を除く): 18029522

約数列:

[1, 2, 7, 14, 19, 38, 107, 133, 214, 266, 749, 769, 1498, 1538, 2033, 4066, 5383, 10766, 14231, 14611, 28462, 29222, 82283, 102277, 164566, 204554, 575981, 1151962, 1563377, 3126754, 10943639, 21887278]

約数ペア:

[(1, 21887278), (2, 10943639), (7, 3126754), (14, 1563377), (19, 1151962), (38, 575981), (107, 204554), (133, 164566), (214, 102277), (266, 82283), (749, 29222), (769, 28462), (1498, 14611), (1538, 14231), (2033, 10766), (4066, 5383)]