20178004528

素因数分解:

$2^4\times {\mathrm{11}}^2\times {\mathrm{89}}^1\times {\mathrm{181}}^1\times {\mathrm{647}}^1$

素因数の和:947

約数の個数: 120

約数和(自身を含む): 43762511520

約数和(自身を除く): 23584506992

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 88, 89, 121, 176, 178, 181, 242, 356, 362, 484, 647, 712, 724, 968, 979, 1294, 1424, 1448, 1936, 1958, 1991, 2588, 2896, 3916, 3982, 5176, 7117, 7832, 7964, 10352, 10769, 14234, 15664, 15928, 16109, 21538, 21901, 28468, 31856, 32218, 43076, 43802, 56936, 57583, 64436, 78287, 86152, 87604, 113872, 115166, 117107, 128872, 156574, 172304, 175208, 177199, 230332, 234214, 257744, 313148, 350416, 354398, 460664, 468428, 626296, 633413, 708796, 921328, 936856, 1252592, 1266826, 1288177, 1417592, 1873712, 1949189, 2533652, 2576354, 2835184, 3898378, 5067304, 5152708, 6967543, 7796756, 10134608, 10305416, 10422523, 13935086, 14169947, 15593512, 20610832, 20845046, 27870172, 28339894, 31187024, 41690092, 55740344, 56679788, 83380184, 111480688, 113359576, 114647753, 166760368, 226719152, 229295506, 458591012, 917182024, 1261125283, 1834364048, 2522250566, 5044501132, 10089002264, 20178004528]

約数ペア:

[(1, 20178004528), (2, 10089002264), (4, 5044501132), (8, 2522250566), (11, 1834364048), (16, 1261125283), (22, 917182024), (44, 458591012), (88, 229295506), (89, 226719152), (121, 166760368), (176, 114647753), (178, 113359576), (181, 111480688), (242, 83380184), (356, 56679788), (362, 55740344), (484, 41690092), (647, 31187024), (712, 28339894), (724, 27870172), (968, 20845046), (979, 20610832), (1294, 15593512), (1424, 14169947), (1448, 13935086), (1936, 10422523), (1958, 10305416), (1991, 10134608), (2588, 7796756), (2896, 6967543), (3916, 5152708), (3982, 5067304), (5176, 3898378), (7117, 2835184), (7832, 2576354), (7964, 2533652), (10352, 1949189), (10769, 1873712), (14234, 1417592), (15664, 1288177), (15928, 1266826), (16109, 1252592), (21538, 936856), (21901, 921328), (28468, 708796), (31856, 633413), (32218, 626296), (43076, 468428), (43802, 460664), (56936, 354398), (57583, 350416), (64436, 313148), (78287, 257744), (86152, 234214), (87604, 230332), (113872, 177199), (115166, 175208), (117107, 172304), (128872, 156574)]