21711216

素因数分解:

$2^4\times 3^1\times {\mathrm{43}}^1\times {\mathrm{67}}^1\times {\mathrm{157}}^1$

素因数の和:278

約数の個数: 80

約数和(自身を含む): 58619264

約数和(自身を除く): 36908048

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 24, 43, 48, 67, 86, 129, 134, 157, 172, 201, 258, 268, 314, 344, 402, 471, 516, 536, 628, 688, 804, 942, 1032, 1072, 1256, 1608, 1884, 2064, 2512, 2881, 3216, 3768, 5762, 6751, 7536, 8643, 10519, 11524, 13502, 17286, 20253, 21038, 23048, 27004, 31557, 34572, 40506, 42076, 46096, 54008, 63114, 69144, 81012, 84152, 108016, 126228, 138288, 162024, 168304, 252456, 324048, 452317, 504912, 904634, 1356951, 1809268, 2713902, 3618536, 5427804, 7237072, 10855608, 21711216]

約数ペア:

[(1, 21711216), (2, 10855608), (3, 7237072), (4, 5427804), (6, 3618536), (8, 2713902), (12, 1809268), (16, 1356951), (24, 904634), (43, 504912), (48, 452317), (67, 324048), (86, 252456), (129, 168304), (134, 162024), (157, 138288), (172, 126228), (201, 108016), (258, 84152), (268, 81012), (314, 69144), (344, 63114), (402, 54008), (471, 46096), (516, 42076), (536, 40506), (628, 34572), (688, 31557), (804, 27004), (942, 23048), (1032, 21038), (1072, 20253), (1256, 17286), (1608, 13502), (1884, 11524), (2064, 10519), (2512, 8643), (2881, 7536), (3216, 6751), (3768, 5762)]