21905214

素因数分解:

$2^1\times 3^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{127}}^1$

素因数の和:257

約数の個数: 64

約数和(自身を含む): 49766400

約数和(自身を除く): 27861186

約数列:

[1, 2, 3, 6, 17, 19, 34, 38, 51, 57, 89, 102, 114, 127, 178, 254, 267, 323, 381, 534, 646, 762, 969, 1513, 1691, 1938, 2159, 2413, 3026, 3382, 4318, 4539, 4826, 5073, 6477, 7239, 9078, 10146, 11303, 12954, 14478, 22606, 28747, 33909, 41021, 57494, 67818, 82042, 86241, 123063, 172482, 192151, 214757, 246126, 384302, 429514, 576453, 644271, 1152906, 1288542, 3650869, 7301738, 10952607, 21905214]

約数ペア:

[(1, 21905214), (2, 10952607), (3, 7301738), (6, 3650869), (17, 1288542), (19, 1152906), (34, 644271), (38, 576453), (51, 429514), (57, 384302), (89, 246126), (102, 214757), (114, 192151), (127, 172482), (178, 123063), (254, 86241), (267, 82042), (323, 67818), (381, 57494), (534, 41021), (646, 33909), (762, 28747), (969, 22606), (1513, 14478), (1691, 12954), (1938, 11303), (2159, 10146), (2413, 9078), (3026, 7239), (3382, 6477), (4318, 5073), (4539, 4826)]