21000331744

素因数分解:

$2^5\times 7^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{277}}^1\times {\mathrm{463}}^1$

素因数の和:817

約数の個数: 192

約数和(自身を含む): 51489478656

約数和(自身を除く): 30489146912

約数列:

[1, 2, 4, 7, 8, 14, 16, 17, 28, 32, 34, 43, 56, 68, 86, 112, 119, 136, 172, 224, 238, 272, 277, 301, 344, 463, 476, 544, 554, 602, 688, 731, 926, 952, 1108, 1204, 1376, 1462, 1852, 1904, 1939, 2216, 2408, 2924, 3241, 3704, 3808, 3878, 4432, 4709, 4816, 5117, 5848, 6482, 7408, 7756, 7871, 8864, 9418, 9632, 10234, 11696, 11911, 12964, 14816, 15512, 15742, 18836, 19909, 20468, 23392, 23822, 25928, 31024, 31484, 32963, 37672, 39818, 40936, 47644, 51856, 55097, 62048, 62968, 65926, 75344, 79636, 81872, 83377, 95288, 103712, 110194, 125936, 128251, 131852, 139363, 150688, 159272, 163744, 166754, 190576, 202487, 220388, 251872, 256502, 263704, 278726, 318544, 333508, 338453, 381152, 404974, 440776, 513004, 527408, 557452, 637088, 667016, 676906, 809948, 881552, 897757, 1026008, 1054816, 1114904, 1334032, 1353812, 1417409, 1619896, 1763104, 1795514, 2052016, 2180267, 2229808, 2369171, 2668064, 2707624, 2834818, 3239792, 3591028, 4104032, 4360534, 4459616, 4738342, 5415248, 5514793, 5669636, 6479584, 7182056, 8721068, 9476684, 10830496, 11029586, 11339272, 14364112, 15261869, 17442136, 18953368, 22059172, 22678544, 28728224, 30523738, 34884272, 37906736, 38603551, 44118344, 45357088, 61047476, 69768544, 75813472, 77207102, 88236688, 93751481, 122094952, 154414204, 176473376, 187502962, 244189904, 308828408, 375005924, 488379808, 617656816, 656260367, 750011848, 1235313632, 1312520734, 1500023696, 2625041468, 3000047392, 5250082936, 10500165872, 21000331744]

約数ペア:

[(1, 21000331744), (2, 10500165872), (4, 5250082936), (7, 3000047392), (8, 2625041468), (14, 1500023696), (16, 1312520734), (17, 1235313632), (28, 750011848), (32, 656260367), (34, 617656816), (43, 488379808), (56, 375005924), (68, 308828408), (86, 244189904), (112, 187502962), (119, 176473376), (136, 154414204), (172, 122094952), (224, 93751481), (238, 88236688), (272, 77207102), (277, 75813472), (301, 69768544), (344, 61047476), (463, 45357088), (476, 44118344), (544, 38603551), (554, 37906736), (602, 34884272), (688, 30523738), (731, 28728224), (926, 22678544), (952, 22059172), (1108, 18953368), (1204, 17442136), (1376, 15261869), (1462, 14364112), (1852, 11339272), (1904, 11029586), (1939, 10830496), (2216, 9476684), (2408, 8721068), (2924, 7182056), (3241, 6479584), (3704, 5669636), (3808, 5514793), (3878, 5415248), (4432, 4738342), (4709, 4459616), (4816, 4360534), (5117, 4104032), (5848, 3591028), (6482, 3239792), (7408, 2834818), (7756, 2707624), (7871, 2668064), (8864, 2369171), (9418, 2229808), (9632, 2180267), (10234, 2052016), (11696, 1795514), (11911, 1763104), (12964, 1619896), (14816, 1417409), (15512, 1353812), (15742, 1334032), (18836, 1114904), (19909, 1054816), (20468, 1026008), (23392, 897757), (23822, 881552), (25928, 809948), (31024, 676906), (31484, 667016), (32963, 637088), (37672, 557452), (39818, 527408), (40936, 513004), (47644, 440776), (51856, 404974), (55097, 381152), (62048, 338453), (62968, 333508), (65926, 318544), (75344, 278726), (79636, 263704), (81872, 256502), (83377, 251872), (95288, 220388), (103712, 202487), (110194, 190576), (125936, 166754), (128251, 163744), (131852, 159272), (139363, 150688)]