21991405212

素因数分解:

$2^2\times 3^2\times 7^3\times {\mathrm{1780969}}^1$

素因数の和:1781000

約数の個数: 72

約数和(自身を含む): 64827308000

約数和(自身を除く): 42835902788

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 49, 63, 84, 98, 126, 147, 196, 252, 294, 343, 441, 588, 686, 882, 1029, 1372, 1764, 2058, 3087, 4116, 6174, 12348, 1780969, 3561938, 5342907, 7123876, 10685814, 12466783, 16028721, 21371628, 24933566, 32057442, 37400349, 49867132, 64114884, 74800698, 87267481, 112201047, 149601396, 174534962, 224402094, 261802443, 349069924, 448804188, 523604886, 610872367, 785407329, 1047209772, 1221744734, 1570814658, 1832617101, 2443489468, 3141629316, 3665234202, 5497851303, 7330468404, 10995702606, 21991405212]

約数ペア:

[(1, 21991405212), (2, 10995702606), (3, 7330468404), (4, 5497851303), (6, 3665234202), (7, 3141629316), (9, 2443489468), (12, 1832617101), (14, 1570814658), (18, 1221744734), (21, 1047209772), (28, 785407329), (36, 610872367), (42, 523604886), (49, 448804188), (63, 349069924), (84, 261802443), (98, 224402094), (126, 174534962), (147, 149601396), (196, 112201047), (252, 87267481), (294, 74800698), (343, 64114884), (441, 49867132), (588, 37400349), (686, 32057442), (882, 24933566), (1029, 21371628), (1372, 16028721), (1764, 12466783), (2058, 10685814), (3087, 7123876), (4116, 5342907), (6174, 3561938), (12348, 1780969)]