21678734

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{239}}^1$

素因数の和:309

約数の個数: 64

約数和(自身を含む): 44236800

約数和(自身を除く): 22558066

約数列:

[1, 2, 7, 11, 14, 19, 22, 31, 38, 62, 77, 133, 154, 209, 217, 239, 266, 341, 418, 434, 478, 589, 682, 1178, 1463, 1673, 2387, 2629, 2926, 3346, 4123, 4541, 4774, 5258, 6479, 7409, 8246, 9082, 12958, 14818, 18403, 31787, 36806, 45353, 49951, 51863, 63574, 81499, 90706, 99902, 103726, 140771, 162998, 281542, 349657, 570493, 699314, 985397, 1140986, 1548481, 1970794, 3096962, 10839367, 21678734]

約数ペア:

[(1, 21678734), (2, 10839367), (7, 3096962), (11, 1970794), (14, 1548481), (19, 1140986), (22, 985397), (31, 699314), (38, 570493), (62, 349657), (77, 281542), (133, 162998), (154, 140771), (209, 103726), (217, 99902), (239, 90706), (266, 81499), (341, 63574), (418, 51863), (434, 49951), (478, 45353), (589, 36806), (682, 31787), (1178, 18403), (1463, 14818), (1673, 12958), (2387, 9082), (2629, 8246), (2926, 7409), (3346, 6479), (4123, 5258), (4541, 4774)]