21000500388

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{97}}^1\times {\mathrm{137}}^1\times {\mathrm{6271}}^1$

素因数の和:6522

約数の個数: 144

約数和(自身を含む): 61750800384

約数和(自身を除く): 40750299996

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 63, 84, 97, 126, 137, 194, 252, 274, 291, 388, 411, 548, 582, 679, 822, 873, 959, 1164, 1233, 1358, 1644, 1746, 1918, 2037, 2466, 2716, 2877, 3492, 3836, 4074, 4932, 5754, 6111, 6271, 8148, 8631, 11508, 12222, 12542, 13289, 17262, 18813, 24444, 25084, 26578, 34524, 37626, 39867, 43897, 53156, 56439, 75252, 79734, 87794, 93023, 112878, 119601, 131691, 159468, 175588, 186046, 225756, 239202, 263382, 279069, 372092, 395073, 478404, 526764, 558138, 608287, 790146, 837207, 859127, 1116276, 1216574, 1580292, 1674414, 1718254, 1824861, 2433148, 2577381, 3348828, 3436508, 3649722, 4258009, 5154762, 5474583, 6013889, 7299444, 7732143, 8516018, 10309524, 10949166, 12027778, 12774027, 15464286, 17032036, 18041667, 21898332, 24055556, 25548054, 30928572, 36083334, 38322081, 51096108, 54125001, 72166668, 76644162, 83335319, 108250002, 153288324, 166670638, 216500004, 250005957, 333341276, 500011914, 583347233, 750017871, 1000023828, 1166694466, 1500035742, 1750041699, 2333388932, 3000071484, 3500083398, 5250125097, 7000166796, 10500250194, 21000500388]

約数ペア:

[(1, 21000500388), (2, 10500250194), (3, 7000166796), (4, 5250125097), (6, 3500083398), (7, 3000071484), (9, 2333388932), (12, 1750041699), (14, 1500035742), (18, 1166694466), (21, 1000023828), (28, 750017871), (36, 583347233), (42, 500011914), (63, 333341276), (84, 250005957), (97, 216500004), (126, 166670638), (137, 153288324), (194, 108250002), (252, 83335319), (274, 76644162), (291, 72166668), (388, 54125001), (411, 51096108), (548, 38322081), (582, 36083334), (679, 30928572), (822, 25548054), (873, 24055556), (959, 21898332), (1164, 18041667), (1233, 17032036), (1358, 15464286), (1644, 12774027), (1746, 12027778), (1918, 10949166), (2037, 10309524), (2466, 8516018), (2716, 7732143), (2877, 7299444), (3492, 6013889), (3836, 5474583), (4074, 5154762), (4932, 4258009), (5754, 3649722), (6111, 3436508), (6271, 3348828), (8148, 2577381), (8631, 2433148), (11508, 1824861), (12222, 1718254), (12542, 1674414), (13289, 1580292), (17262, 1216574), (18813, 1116276), (24444, 859127), (25084, 837207), (26578, 790146), (34524, 608287), (37626, 558138), (39867, 526764), (43897, 478404), (53156, 395073), (56439, 372092), (75252, 279069), (79734, 263382), (87794, 239202), (93023, 225756), (112878, 186046), (119601, 175588), (131691, 159468)]