21720489768

素因数分解:

$2^3\times 3^3\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{313}}^1\times {\mathrm{457}}^1$

素因数の和:841

約数の個数: 256

約数和(自身を含む): 65578272000

約数和(自身を除く): 43857782232

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 19, 24, 27, 36, 37, 38, 54, 57, 72, 74, 76, 108, 111, 114, 148, 152, 171, 216, 222, 228, 296, 313, 333, 342, 444, 456, 457, 513, 626, 666, 684, 703, 888, 914, 939, 999, 1026, 1252, 1332, 1368, 1371, 1406, 1828, 1878, 1998, 2052, 2109, 2504, 2664, 2742, 2812, 2817, 3656, 3756, 3996, 4104, 4113, 4218, 5484, 5624, 5634, 5947, 6327, 7512, 7992, 8226, 8436, 8451, 8683, 10968, 11268, 11581, 11894, 12339, 12654, 16452, 16872, 16902, 16909, 17366, 17841, 18981, 22536, 23162, 23788, 24678, 25308, 26049, 32904, 33804, 33818, 34732, 34743, 35682, 37962, 46324, 47576, 49356, 50616, 50727, 52098, 53523, 67608, 67636, 69464, 69486, 71364, 75924, 78147, 92648, 98712, 101454, 104196, 104229, 107046, 135272, 138972, 142728, 143041, 151848, 152181, 156294, 160569, 202908, 208392, 208458, 214092, 220039, 234441, 277944, 286082, 304362, 312588, 312687, 321138, 321271, 405816, 416916, 428184, 429123, 440078, 456543, 468882, 572164, 608724, 625176, 625374, 642276, 642542, 660117, 833832, 858246, 880156, 913086, 937764, 963813, 1144328, 1217448, 1250748, 1284552, 1285084, 1287369, 1320234, 1716492, 1760312, 1826172, 1875528, 1927626, 1980351, 2501496, 2570168, 2574738, 2640468, 2717779, 2891439, 3432984, 3652344, 3855252, 3862107, 3960702, 5149476, 5280936, 5292517, 5435558, 5782878, 5941053, 7710504, 7724214, 7921404, 8153337, 8674317, 10298952, 10585034, 10871116, 11565756, 11882106, 15448428, 15842808, 15877551, 16306674, 17348634, 21170068, 21742232, 23131512, 23764212, 24460011, 30896856, 31755102, 32613348, 34697268, 42340136, 47528424, 47632653, 48920022, 63510204, 65226696, 69394536, 73380033, 95265306, 97840044, 100557823, 127020408, 142897959, 146760066, 190530612, 195680088, 201115646, 285795918, 293520132, 301673469, 381061224, 402231292, 571591836, 587040264, 603346938, 804462584, 905020407, 1143183672, 1206693876, 1810040814, 2413387752, 2715061221, 3620081628, 5430122442, 7240163256, 10860244884, 21720489768]

約数ペア:

[(1, 21720489768), (2, 10860244884), (3, 7240163256), (4, 5430122442), (6, 3620081628), (8, 2715061221), (9, 2413387752), (12, 1810040814), (18, 1206693876), (19, 1143183672), (24, 905020407), (27, 804462584), (36, 603346938), (37, 587040264), (38, 571591836), (54, 402231292), (57, 381061224), (72, 301673469), (74, 293520132), (76, 285795918), (108, 201115646), (111, 195680088), (114, 190530612), (148, 146760066), (152, 142897959), (171, 127020408), (216, 100557823), (222, 97840044), (228, 95265306), (296, 73380033), (313, 69394536), (333, 65226696), (342, 63510204), (444, 48920022), (456, 47632653), (457, 47528424), (513, 42340136), (626, 34697268), (666, 32613348), (684, 31755102), (703, 30896856), (888, 24460011), (914, 23764212), (939, 23131512), (999, 21742232), (1026, 21170068), (1252, 17348634), (1332, 16306674), (1368, 15877551), (1371, 15842808), (1406, 15448428), (1828, 11882106), (1878, 11565756), (1998, 10871116), (2052, 10585034), (2109, 10298952), (2504, 8674317), (2664, 8153337), (2742, 7921404), (2812, 7724214), (2817, 7710504), (3656, 5941053), (3756, 5782878), (3996, 5435558), (4104, 5292517), (4113, 5280936), (4218, 5149476), (5484, 3960702), (5624, 3862107), (5634, 3855252), (5947, 3652344), (6327, 3432984), (7512, 2891439), (7992, 2717779), (8226, 2640468), (8436, 2574738), (8451, 2570168), (8683, 2501496), (10968, 1980351), (11268, 1927626), (11581, 1875528), (11894, 1826172), (12339, 1760312), (12654, 1716492), (16452, 1320234), (16872, 1287369), (16902, 1285084), (16909, 1284552), (17366, 1250748), (17841, 1217448), (18981, 1144328), (22536, 963813), (23162, 937764), (23788, 913086), (24678, 880156), (25308, 858246), (26049, 833832), (32904, 660117), (33804, 642542), (33818, 642276), (34732, 625374), (34743, 625176), (35682, 608724), (37962, 572164), (46324, 468882), (47576, 456543), (49356, 440078), (50616, 429123), (50727, 428184), (52098, 416916), (53523, 405816), (67608, 321271), (67636, 321138), (69464, 312687), (69486, 312588), (71364, 304362), (75924, 286082), (78147, 277944), (92648, 234441), (98712, 220039), (101454, 214092), (104196, 208458), (104229, 208392), (107046, 202908), (135272, 160569), (138972, 156294), (142728, 152181), (143041, 151848)]