20217507856

素因数分解:

$2^4\times 7^1\times {\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{83}}^1\times {\mathrm{757}}^1$

素因数の和:898

約数の個数: 240

約数和(自身を含む): 52014420864

約数和(自身を除く): 31796913008

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 17, 26, 28, 34, 52, 56, 68, 83, 91, 104, 112, 119, 136, 166, 169, 182, 208, 221, 238, 272, 332, 338, 364, 442, 476, 581, 664, 676, 728, 757, 884, 952, 1079, 1162, 1183, 1328, 1352, 1411, 1456, 1514, 1547, 1768, 1904, 2158, 2324, 2366, 2704, 2822, 2873, 3028, 3094, 3536, 4316, 4648, 4732, 5299, 5644, 5746, 6056, 6188, 7553, 8632, 9296, 9464, 9841, 9877, 10598, 11288, 11492, 12112, 12376, 12869, 14027, 15106, 17264, 18343, 18928, 19682, 19754, 20111, 21196, 22576, 22984, 24752, 25738, 28054, 30212, 36686, 39364, 39508, 40222, 42392, 45968, 51476, 56108, 60424, 62831, 68887, 73372, 78728, 79016, 80444, 84784, 90083, 98189, 102952, 112216, 120848, 125662, 127933, 128401, 137774, 146744, 157456, 158032, 160888, 167297, 180166, 196378, 205904, 224432, 238459, 251324, 255866, 256802, 275548, 293488, 321776, 334594, 360332, 392756, 439817, 476918, 502648, 511732, 513604, 551096, 669188, 720664, 785512, 816803, 879634, 895531, 953836, 1005296, 1023464, 1027208, 1068127, 1102192, 1171079, 1338376, 1441328, 1571024, 1633606, 1669213, 1759268, 1791062, 1907672, 2046928, 2054416, 2136254, 2174861, 2342158, 2676752, 3267212, 3338426, 3518536, 3582124, 3815344, 4272508, 4349722, 4684316, 5717621, 6534424, 6676852, 7037072, 7164248, 7476889, 8545016, 8699444, 9368632, 10618439, 11435242, 13068848, 13353704, 13885651, 14328496, 14953778, 15224027, 17090032, 17398888, 18737264, 21236878, 22870484, 26707408, 27771302, 29907556, 30448054, 34797776, 42473756, 45740968, 55542604, 59815112, 60896108, 74329073, 84947512, 91481936, 97199557, 111085208, 119630224, 121792216, 148658146, 169895024, 180513463, 194399114, 222170416, 243584432, 297316292, 361026926, 388798228, 594632584, 722053852, 777596456, 1189265168, 1263594241, 1444107704, 1555192912, 2527188482, 2888215408, 5054376964, 10108753928, 20217507856]

約数ペア:

[(1, 20217507856), (2, 10108753928), (4, 5054376964), (7, 2888215408), (8, 2527188482), (13, 1555192912), (14, 1444107704), (16, 1263594241), (17, 1189265168), (26, 777596456), (28, 722053852), (34, 594632584), (52, 388798228), (56, 361026926), (68, 297316292), (83, 243584432), (91, 222170416), (104, 194399114), (112, 180513463), (119, 169895024), (136, 148658146), (166, 121792216), (169, 119630224), (182, 111085208), (208, 97199557), (221, 91481936), (238, 84947512), (272, 74329073), (332, 60896108), (338, 59815112), (364, 55542604), (442, 45740968), (476, 42473756), (581, 34797776), (664, 30448054), (676, 29907556), (728, 27771302), (757, 26707408), (884, 22870484), (952, 21236878), (1079, 18737264), (1162, 17398888), (1183, 17090032), (1328, 15224027), (1352, 14953778), (1411, 14328496), (1456, 13885651), (1514, 13353704), (1547, 13068848), (1768, 11435242), (1904, 10618439), (2158, 9368632), (2324, 8699444), (2366, 8545016), (2704, 7476889), (2822, 7164248), (2873, 7037072), (3028, 6676852), (3094, 6534424), (3536, 5717621), (4316, 4684316), (4648, 4349722), (4732, 4272508), (5299, 3815344), (5644, 3582124), (5746, 3518536), (6056, 3338426), (6188, 3267212), (7553, 2676752), (8632, 2342158), (9296, 2174861), (9464, 2136254), (9841, 2054416), (9877, 2046928), (10598, 1907672), (11288, 1791062), (11492, 1759268), (12112, 1669213), (12376, 1633606), (12869, 1571024), (14027, 1441328), (15106, 1338376), (17264, 1171079), (18343, 1102192), (18928, 1068127), (19682, 1027208), (19754, 1023464), (20111, 1005296), (21196, 953836), (22576, 895531), (22984, 879634), (24752, 816803), (25738, 785512), (28054, 720664), (30212, 669188), (36686, 551096), (39364, 513604), (39508, 511732), (40222, 502648), (42392, 476918), (45968, 439817), (51476, 392756), (56108, 360332), (60424, 334594), (62831, 321776), (68887, 293488), (73372, 275548), (78728, 256802), (79016, 255866), (80444, 251324), (84784, 238459), (90083, 224432), (98189, 205904), (102952, 196378), (112216, 180166), (120848, 167297), (125662, 160888), (127933, 158032), (128401, 157456), (137774, 146744)]