261309664

素因数分解:

$2^5\times 7^1\times {\mathrm{11}}^2\times {\mathrm{31}}^1\times {\mathrm{311}}^1$

素因数の和:381

約数の個数: 144

約数和(自身を含む): 669247488

約数和(自身を除く): 407937824

約数列:

[1, 2, 4, 7, 8, 11, 14, 16, 22, 28, 31, 32, 44, 56, 62, 77, 88, 112, 121, 124, 154, 176, 217, 224, 242, 248, 308, 311, 341, 352, 434, 484, 496, 616, 622, 682, 847, 868, 968, 992, 1232, 1244, 1364, 1694, 1736, 1936, 2177, 2387, 2464, 2488, 2728, 3388, 3421, 3472, 3751, 3872, 4354, 4774, 4976, 5456, 6776, 6842, 6944, 7502, 8708, 9548, 9641, 9952, 10912, 13552, 13684, 15004, 17416, 19096, 19282, 23947, 26257, 27104, 27368, 30008, 34832, 37631, 38192, 38564, 47894, 52514, 54736, 60016, 67487, 69664, 75262, 76384, 77128, 95788, 105028, 106051, 109472, 120032, 134974, 150524, 154256, 191576, 210056, 212102, 263417, 269948, 301048, 308512, 383152, 420112, 424204, 526834, 539896, 602096, 742357, 766304, 840224, 848408, 1053668, 1079792, 1166561, 1204192, 1484714, 1696816, 2107336, 2159584, 2333122, 2969428, 3393632, 4214672, 4666244, 5938856, 8165927, 8429344, 9332488, 11877712, 16331854, 18664976, 23755424, 32663708, 37329952, 65327416, 130654832, 261309664]

約数ペア:

[(1, 261309664), (2, 130654832), (4, 65327416), (7, 37329952), (8, 32663708), (11, 23755424), (14, 18664976), (16, 16331854), (22, 11877712), (28, 9332488), (31, 8429344), (32, 8165927), (44, 5938856), (56, 4666244), (62, 4214672), (77, 3393632), (88, 2969428), (112, 2333122), (121, 2159584), (124, 2107336), (154, 1696816), (176, 1484714), (217, 1204192), (224, 1166561), (242, 1079792), (248, 1053668), (308, 848408), (311, 840224), (341, 766304), (352, 742357), (434, 602096), (484, 539896), (496, 526834), (616, 424204), (622, 420112), (682, 383152), (847, 308512), (868, 301048), (968, 269948), (992, 263417), (1232, 212102), (1244, 210056), (1364, 191576), (1694, 154256), (1736, 150524), (1936, 134974), (2177, 120032), (2387, 109472), (2464, 106051), (2488, 105028), (2728, 95788), (3388, 77128), (3421, 76384), (3472, 75262), (3751, 69664), (3872, 67487), (4354, 60016), (4774, 54736), (4976, 52514), (5456, 47894), (6776, 38564), (6842, 38192), (6944, 37631), (7502, 34832), (8708, 30008), (9548, 27368), (9641, 27104), (9952, 26257), (10912, 23947), (13552, 19282), (13684, 19096), (15004, 17416)]