21000851916

素因数分解:

$2^2\times 3^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{97}}^1\times {\mathrm{157}}^1\times {\mathrm{337}}^1$

素因数の和:640

約数の個数: 192

約数和(自身を含む): 56271581184

約数和(自身を除く): 35270729268

約数列:

[1, 2, 3, 4, 6, 11, 12, 22, 31, 33, 44, 62, 66, 93, 97, 124, 132, 157, 186, 194, 291, 314, 337, 341, 372, 388, 471, 582, 628, 674, 682, 942, 1011, 1023, 1067, 1164, 1348, 1364, 1727, 1884, 2022, 2046, 2134, 3007, 3201, 3454, 3707, 4044, 4092, 4268, 4867, 5181, 6014, 6402, 6908, 7414, 9021, 9734, 10362, 10447, 11121, 12028, 12804, 14601, 14828, 15229, 18042, 19468, 20724, 20894, 22242, 29202, 30458, 31341, 32689, 33077, 36084, 41788, 44484, 45687, 52909, 53537, 58404, 60916, 62682, 65378, 66154, 91374, 98067, 99231, 105818, 107074, 114917, 125364, 130756, 132308, 158727, 160611, 167519, 182748, 196134, 198462, 211636, 214148, 229834, 317454, 321222, 335038, 344751, 359579, 392268, 396924, 459668, 472099, 502557, 581999, 634908, 642444, 670076, 689502, 719158, 944198, 1005114, 1013359, 1078737, 1163998, 1379004, 1416297, 1438316, 1640179, 1745997, 1888396, 2010228, 2026718, 2157474, 2327996, 2832594, 3040077, 3280358, 3491994, 4053436, 4314948, 4920537, 5132173, 5193089, 5665188, 6080154, 6560716, 6983988, 9841074, 10264346, 10386178, 11146949, 12160308, 15396519, 15579267, 18041969, 19682148, 20528692, 20772356, 22293898, 30793038, 31158534, 33440847, 36083938, 44587796, 54125907, 56453903, 61586076, 62317068, 66881694, 72167876, 108251814, 112907806, 133763388, 159097363, 169361709, 216503628, 225815612, 318194726, 338723418, 477292089, 636389452, 677446836, 954584178, 1750070993, 1909168356, 3500141986, 5250212979, 7000283972, 10500425958, 21000851916]

約数ペア:

[(1, 21000851916), (2, 10500425958), (3, 7000283972), (4, 5250212979), (6, 3500141986), (11, 1909168356), (12, 1750070993), (22, 954584178), (31, 677446836), (33, 636389452), (44, 477292089), (62, 338723418), (66, 318194726), (93, 225815612), (97, 216503628), (124, 169361709), (132, 159097363), (157, 133763388), (186, 112907806), (194, 108251814), (291, 72167876), (314, 66881694), (337, 62317068), (341, 61586076), (372, 56453903), (388, 54125907), (471, 44587796), (582, 36083938), (628, 33440847), (674, 31158534), (682, 30793038), (942, 22293898), (1011, 20772356), (1023, 20528692), (1067, 19682148), (1164, 18041969), (1348, 15579267), (1364, 15396519), (1727, 12160308), (1884, 11146949), (2022, 10386178), (2046, 10264346), (2134, 9841074), (3007, 6983988), (3201, 6560716), (3454, 6080154), (3707, 5665188), (4044, 5193089), (4092, 5132173), (4268, 4920537), (4867, 4314948), (5181, 4053436), (6014, 3491994), (6402, 3280358), (6908, 3040077), (7414, 2832594), (9021, 2327996), (9734, 2157474), (10362, 2026718), (10447, 2010228), (11121, 1888396), (12028, 1745997), (12804, 1640179), (14601, 1438316), (14828, 1416297), (15229, 1379004), (18042, 1163998), (19468, 1078737), (20724, 1013359), (20894, 1005114), (22242, 944198), (29202, 719158), (30458, 689502), (31341, 670076), (32689, 642444), (33077, 634908), (36084, 581999), (41788, 502557), (44484, 472099), (45687, 459668), (52909, 396924), (53537, 392268), (58404, 359579), (60916, 344751), (62682, 335038), (65378, 321222), (66154, 317454), (91374, 229834), (98067, 214148), (99231, 211636), (105818, 198462), (107074, 196134), (114917, 182748), (125364, 167519), (130756, 160611), (132308, 158727)]