21707784

素因数分解:

$2^3\times 3^3\times 7^3\times {\mathrm{293}}^1$

素因数の和:329

約数の個数: 128

約数和(自身を含む): 70560000

約数和(自身を除く): 48852216

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 18, 21, 24, 27, 28, 36, 42, 49, 54, 56, 63, 72, 84, 98, 108, 126, 147, 168, 189, 196, 216, 252, 293, 294, 343, 378, 392, 441, 504, 586, 588, 686, 756, 879, 882, 1029, 1172, 1176, 1323, 1372, 1512, 1758, 1764, 2051, 2058, 2344, 2637, 2646, 2744, 3087, 3516, 3528, 4102, 4116, 5274, 5292, 6153, 6174, 7032, 7911, 8204, 8232, 9261, 10548, 10584, 12306, 12348, 14357, 15822, 16408, 18459, 18522, 21096, 24612, 24696, 28714, 31644, 36918, 37044, 43071, 49224, 55377, 57428, 63288, 73836, 74088, 86142, 100499, 110754, 114856, 129213, 147672, 172284, 200998, 221508, 258426, 301497, 344568, 387639, 401996, 443016, 516852, 602994, 775278, 803992, 904491, 1033704, 1205988, 1550556, 1808982, 2411976, 2713473, 3101112, 3617964, 5426946, 7235928, 10853892, 21707784]

約数ペア:

[(1, 21707784), (2, 10853892), (3, 7235928), (4, 5426946), (6, 3617964), (7, 3101112), (8, 2713473), (9, 2411976), (12, 1808982), (14, 1550556), (18, 1205988), (21, 1033704), (24, 904491), (27, 803992), (28, 775278), (36, 602994), (42, 516852), (49, 443016), (54, 401996), (56, 387639), (63, 344568), (72, 301497), (84, 258426), (98, 221508), (108, 200998), (126, 172284), (147, 147672), (168, 129213), (189, 114856), (196, 110754), (216, 100499), (252, 86142), (293, 74088), (294, 73836), (343, 63288), (378, 57428), (392, 55377), (441, 49224), (504, 43071), (586, 37044), (588, 36918), (686, 31644), (756, 28714), (879, 24696), (882, 24612), (1029, 21096), (1172, 18522), (1176, 18459), (1323, 16408), (1372, 15822), (1512, 14357), (1758, 12348), (1764, 12306), (2051, 10584), (2058, 10548), (2344, 9261), (2637, 8232), (2646, 8204), (2744, 7911), (3087, 7032), (3516, 6174), (3528, 6153), (4102, 5292), (4116, 5274)]