21459284

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^2\times {\mathrm{193}}^1$

素因数の和:253

約数の個数: 72

約数和(自身を含む): 49670208

約数和(自身を除く): 28210924

約数列:

[1, 2, 4, 7, 11, 14, 19, 22, 28, 38, 44, 76, 77, 133, 154, 193, 209, 266, 308, 361, 386, 418, 532, 722, 772, 836, 1351, 1444, 1463, 2123, 2527, 2702, 2926, 3667, 3971, 4246, 5054, 5404, 5852, 7334, 7942, 8492, 10108, 14668, 14861, 15884, 25669, 27797, 29722, 40337, 51338, 55594, 59444, 69673, 80674, 102676, 111188, 139346, 161348, 278692, 282359, 487711, 564718, 766403, 975422, 1129436, 1532806, 1950844, 3065612, 5364821, 10729642, 21459284]

約数ペア:

[(1, 21459284), (2, 10729642), (4, 5364821), (7, 3065612), (11, 1950844), (14, 1532806), (19, 1129436), (22, 975422), (28, 766403), (38, 564718), (44, 487711), (76, 282359), (77, 278692), (133, 161348), (154, 139346), (193, 111188), (209, 102676), (266, 80674), (308, 69673), (361, 59444), (386, 55594), (418, 51338), (532, 40337), (722, 29722), (772, 27797), (836, 25669), (1351, 15884), (1444, 14861), (1463, 14668), (2123, 10108), (2527, 8492), (2702, 7942), (2926, 7334), (3667, 5852), (3971, 5404), (4246, 5054)]