21297052

素因数分解:

$2^2\times 7^1\times {\mathrm{37}}^1\times {\mathrm{61}}^1\times {\mathrm{337}}^1$

素因数の和:446

約数の個数: 48

約数和(自身を含む): 44594368

約数和(自身を除く): 23297316

約数列:

[1, 2, 4, 7, 14, 28, 37, 61, 74, 122, 148, 244, 259, 337, 427, 518, 674, 854, 1036, 1348, 1708, 2257, 2359, 4514, 4718, 9028, 9436, 12469, 15799, 20557, 24938, 31598, 41114, 49876, 63196, 82228, 87283, 143899, 174566, 287798, 349132, 575596, 760609, 1521218, 3042436, 5324263, 10648526, 21297052]

約数ペア:

[(1, 21297052), (2, 10648526), (4, 5324263), (7, 3042436), (14, 1521218), (28, 760609), (37, 575596), (61, 349132), (74, 287798), (122, 174566), (148, 143899), (244, 87283), (259, 82228), (337, 63196), (427, 49876), (518, 41114), (674, 31598), (854, 24938), (1036, 20557), (1348, 15799), (1708, 12469), (2257, 9436), (2359, 9028), (4514, 4718)]