21747852

素因数分解:

$2^2\times 3^4\times 7^1\times {\mathrm{43}}^1\times {\mathrm{223}}^1$

素因数の和:289

約数の個数: 120

約数和(自身を含む): 66784256

約数和(自身を除く): 45036404

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 27, 28, 36, 42, 43, 54, 63, 81, 84, 86, 108, 126, 129, 162, 172, 189, 223, 252, 258, 301, 324, 378, 387, 446, 516, 567, 602, 669, 756, 774, 892, 903, 1134, 1161, 1204, 1338, 1548, 1561, 1806, 2007, 2268, 2322, 2676, 2709, 3122, 3483, 3612, 4014, 4644, 4683, 5418, 6021, 6244, 6966, 8028, 8127, 9366, 9589, 10836, 12042, 13932, 14049, 16254, 18063, 18732, 19178, 24084, 24381, 28098, 28767, 32508, 36126, 38356, 42147, 48762, 56196, 57534, 67123, 72252, 84294, 86301, 97524, 115068, 126441, 134246, 168588, 172602, 201369, 252882, 258903, 268492, 345204, 402738, 505764, 517806, 604107, 776709, 805476, 1035612, 1208214, 1553418, 1812321, 2416428, 3106836, 3624642, 5436963, 7249284, 10873926, 21747852]

約数ペア:

[(1, 21747852), (2, 10873926), (3, 7249284), (4, 5436963), (6, 3624642), (7, 3106836), (9, 2416428), (12, 1812321), (14, 1553418), (18, 1208214), (21, 1035612), (27, 805476), (28, 776709), (36, 604107), (42, 517806), (43, 505764), (54, 402738), (63, 345204), (81, 268492), (84, 258903), (86, 252882), (108, 201369), (126, 172602), (129, 168588), (162, 134246), (172, 126441), (189, 115068), (223, 97524), (252, 86301), (258, 84294), (301, 72252), (324, 67123), (378, 57534), (387, 56196), (446, 48762), (516, 42147), (567, 38356), (602, 36126), (669, 32508), (756, 28767), (774, 28098), (892, 24381), (903, 24084), (1134, 19178), (1161, 18732), (1204, 18063), (1338, 16254), (1548, 14049), (1561, 13932), (1806, 12042), (2007, 10836), (2268, 9589), (2322, 9366), (2676, 8127), (2709, 8028), (3122, 6966), (3483, 6244), (3612, 6021), (4014, 5418), (4644, 4683)]