638289876

素因数分解:

$2^2\times 3^1\times 7^2\times {\mathrm{19}}^2\times {\mathrm{31}}^1\times {\mathrm{97}}^1$

素因数の和:187

約数の個数: 216

約数和(自身を含む): 1906926336

約数和(自身を除く): 1268636460

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 19, 21, 28, 31, 38, 42, 49, 57, 62, 76, 84, 93, 97, 98, 114, 124, 133, 147, 186, 194, 196, 217, 228, 266, 291, 294, 361, 372, 388, 399, 434, 532, 582, 588, 589, 651, 679, 722, 798, 868, 931, 1083, 1164, 1178, 1302, 1358, 1444, 1519, 1596, 1767, 1843, 1862, 2037, 2166, 2356, 2527, 2604, 2716, 2793, 3007, 3038, 3534, 3686, 3724, 4074, 4123, 4332, 4557, 4753, 5054, 5529, 5586, 6014, 6076, 7068, 7372, 7581, 8148, 8246, 9021, 9114, 9506, 10108, 11058, 11172, 11191, 12028, 12369, 12901, 14259, 15162, 16492, 17689, 18042, 18228, 19012, 21049, 22116, 22382, 24738, 25802, 28518, 28861, 30324, 33573, 35017, 35378, 36084, 38703, 42098, 44764, 49476, 51604, 53067, 57036, 57133, 57722, 63147, 67146, 70034, 70756, 77406, 78337, 84196, 86583, 90307, 105051, 106134, 114266, 115444, 126294, 134292, 140068, 147343, 154812, 156674, 171399, 173166, 180614, 210102, 212268, 228532, 235011, 245119, 252588, 270921, 294686, 313348, 342798, 346332, 361228, 399931, 420204, 442029, 470022, 490238, 541842, 548359, 589372, 685596, 735357, 799862, 884058, 940044, 980476, 1083684, 1085527, 1096718, 1199793, 1470714, 1599724, 1645077, 1715833, 1768116, 2171054, 2193436, 2399586, 2799517, 2941428, 3256581, 3290154, 3431666, 4342108, 4799172, 5147499, 5599034, 6513162, 6580308, 6863332, 7598689, 8398551, 10294998, 11198068, 13026324, 15197378, 16797102, 20589996, 22796067, 30394756, 33594204, 45592134, 53190823, 91184268, 106381646, 159572469, 212763292, 319144938, 638289876]

約数ペア:

[(1, 638289876), (2, 319144938), (3, 212763292), (4, 159572469), (6, 106381646), (7, 91184268), (12, 53190823), (14, 45592134), (19, 33594204), (21, 30394756), (28, 22796067), (31, 20589996), (38, 16797102), (42, 15197378), (49, 13026324), (57, 11198068), (62, 10294998), (76, 8398551), (84, 7598689), (93, 6863332), (97, 6580308), (98, 6513162), (114, 5599034), (124, 5147499), (133, 4799172), (147, 4342108), (186, 3431666), (194, 3290154), (196, 3256581), (217, 2941428), (228, 2799517), (266, 2399586), (291, 2193436), (294, 2171054), (361, 1768116), (372, 1715833), (388, 1645077), (399, 1599724), (434, 1470714), (532, 1199793), (582, 1096718), (588, 1085527), (589, 1083684), (651, 980476), (679, 940044), (722, 884058), (798, 799862), (868, 735357), (931, 685596), (1083, 589372), (1164, 548359), (1178, 541842), (1302, 490238), (1358, 470022), (1444, 442029), (1519, 420204), (1596, 399931), (1767, 361228), (1843, 346332), (1862, 342798), (2037, 313348), (2166, 294686), (2356, 270921), (2527, 252588), (2604, 245119), (2716, 235011), (2793, 228532), (3007, 212268), (3038, 210102), (3534, 180614), (3686, 173166), (3724, 171399), (4074, 156674), (4123, 154812), (4332, 147343), (4557, 140068), (4753, 134292), (5054, 126294), (5529, 115444), (5586, 114266), (6014, 106134), (6076, 105051), (7068, 90307), (7372, 86583), (7581, 84196), (8148, 78337), (8246, 77406), (9021, 70756), (9114, 70034), (9506, 67146), (10108, 63147), (11058, 57722), (11172, 57133), (11191, 57036), (12028, 53067), (12369, 51604), (12901, 49476), (14259, 44764), (15162, 42098), (16492, 38703), (17689, 36084), (18042, 35378), (18228, 35017), (19012, 33573), (21049, 30324), (22116, 28861), (22382, 28518), (24738, 25802)]