21748216

素因数分解:

$2^3\times 7^1\times {\mathrm{47}}^1\times {\mathrm{8263}}^1$

素因数の和:8323

約数の個数: 32

約数和(自身を含む): 47600640

約数和(自身を除く): 25852424

約数列:

[1, 2, 4, 7, 8, 14, 28, 47, 56, 94, 188, 329, 376, 658, 1316, 2632, 8263, 16526, 33052, 57841, 66104, 115682, 231364, 388361, 462728, 776722, 1553444, 2718527, 3106888, 5437054, 10874108, 21748216]

約数ペア:

[(1, 21748216), (2, 10874108), (4, 5437054), (7, 3106888), (8, 2718527), (14, 1553444), (28, 776722), (47, 462728), (56, 388361), (94, 231364), (188, 115682), (329, 66104), (376, 57841), (658, 33052), (1316, 16526), (2632, 8263)]