638256892

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{229}}^1$

素因数の和:316

約数の個数: 144

約数和(自身を含む): 1508505600

約数和(自身を除く): 870248708

約数列:

[1, 2, 4, 7, 13, 14, 19, 26, 28, 31, 38, 52, 62, 76, 91, 124, 133, 169, 182, 217, 229, 247, 266, 338, 364, 403, 434, 458, 494, 532, 589, 676, 806, 868, 916, 988, 1178, 1183, 1603, 1612, 1729, 2356, 2366, 2821, 2977, 3206, 3211, 3458, 4123, 4351, 4732, 5239, 5642, 5954, 6412, 6422, 6916, 7099, 7657, 8246, 8702, 10478, 11284, 11908, 12844, 14198, 15314, 16492, 17404, 20839, 20956, 22477, 28396, 30457, 30628, 36673, 38701, 41678, 44954, 49693, 53599, 56563, 60914, 73346, 77402, 83356, 89908, 92287, 99386, 99541, 107198, 113126, 121828, 134881, 146692, 154804, 184574, 198772, 199082, 214396, 226252, 269762, 270907, 369148, 395941, 398164, 539524, 541814, 646009, 696787, 735319, 791882, 944167, 1083628, 1199731, 1292018, 1393574, 1470638, 1583764, 1753453, 1888334, 2399462, 2584036, 2787148, 2941276, 3506906, 3776668, 4798924, 5147233, 7013812, 8398117, 10294466, 12274171, 16796234, 20588932, 22794889, 24548342, 33592468, 45589778, 49096684, 91179556, 159564223, 319128446, 638256892]

約数ペア:

[(1, 638256892), (2, 319128446), (4, 159564223), (7, 91179556), (13, 49096684), (14, 45589778), (19, 33592468), (26, 24548342), (28, 22794889), (31, 20588932), (38, 16796234), (52, 12274171), (62, 10294466), (76, 8398117), (91, 7013812), (124, 5147233), (133, 4798924), (169, 3776668), (182, 3506906), (217, 2941276), (229, 2787148), (247, 2584036), (266, 2399462), (338, 1888334), (364, 1753453), (403, 1583764), (434, 1470638), (458, 1393574), (494, 1292018), (532, 1199731), (589, 1083628), (676, 944167), (806, 791882), (868, 735319), (916, 696787), (988, 646009), (1178, 541814), (1183, 539524), (1603, 398164), (1612, 395941), (1729, 369148), (2356, 270907), (2366, 269762), (2821, 226252), (2977, 214396), (3206, 199082), (3211, 198772), (3458, 184574), (4123, 154804), (4351, 146692), (4732, 134881), (5239, 121828), (5642, 113126), (5954, 107198), (6412, 99541), (6422, 99386), (6916, 92287), (7099, 89908), (7657, 83356), (8246, 77402), (8702, 73346), (10478, 60914), (11284, 56563), (11908, 53599), (12844, 49693), (14198, 44954), (15314, 41678), (16492, 38701), (17404, 36673), (20839, 30628), (20956, 30457), (22477, 28396)]