21757638

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{701}}^1\times {\mathrm{739}}^1$

素因数の和:1452

約数の個数: 32

約数和(自身を含む): 49870080

約数和(自身を除く): 28112442

約数列:

[1, 2, 3, 6, 7, 14, 21, 42, 701, 739, 1402, 1478, 2103, 2217, 4206, 4434, 4907, 5173, 9814, 10346, 14721, 15519, 29442, 31038, 518039, 1036078, 1554117, 3108234, 3626273, 7252546, 10878819, 21757638]

約数ペア:

[(1, 21757638), (2, 10878819), (3, 7252546), (6, 3626273), (7, 3108234), (14, 1554117), (21, 1036078), (42, 518039), (701, 31038), (739, 29442), (1402, 15519), (1478, 14721), (2103, 10346), (2217, 9814), (4206, 5173), (4434, 4907)]