21238681688

素因数分解:

$2^3\times 7^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{79}}^1\times {\mathrm{6829}}^1$

素因数の和:6977

約数の個数: 128

約数和(自身を含む): 49831680000

約数和(自身を除く): 28592998312

約数列:

[1, 2, 4, 7, 8, 14, 19, 28, 37, 38, 56, 74, 76, 79, 133, 148, 152, 158, 259, 266, 296, 316, 518, 532, 553, 632, 703, 1036, 1064, 1106, 1406, 1501, 2072, 2212, 2812, 2923, 3002, 4424, 4921, 5624, 5846, 6004, 6829, 9842, 10507, 11692, 12008, 13658, 19684, 20461, 21014, 23384, 27316, 39368, 40922, 42028, 47803, 54632, 55537, 81844, 84056, 95606, 111074, 129751, 163688, 191212, 222148, 252673, 259502, 382424, 388759, 444296, 505346, 519004, 539491, 777518, 908257, 1010692, 1038008, 1078982, 1555036, 1768711, 1816514, 2021384, 2157964, 3110072, 3537422, 3633028, 3776437, 4315928, 4800787, 7074844, 7266056, 7552874, 9601574, 10250329, 14149688, 15105748, 19203148, 19961167, 20500658, 30211496, 33605509, 38406296, 39922334, 41001316, 67211018, 71752303, 79844668, 82002632, 134422036, 139728169, 143504606, 159689336, 268844072, 279456338, 287009212, 379262173, 558912676, 574018424, 758524346, 1117825352, 1517048692, 2654835211, 3034097384, 5309670422, 10619340844, 21238681688]

約数ペア:

[(1, 21238681688), (2, 10619340844), (4, 5309670422), (7, 3034097384), (8, 2654835211), (14, 1517048692), (19, 1117825352), (28, 758524346), (37, 574018424), (38, 558912676), (56, 379262173), (74, 287009212), (76, 279456338), (79, 268844072), (133, 159689336), (148, 143504606), (152, 139728169), (158, 134422036), (259, 82002632), (266, 79844668), (296, 71752303), (316, 67211018), (518, 41001316), (532, 39922334), (553, 38406296), (632, 33605509), (703, 30211496), (1036, 20500658), (1064, 19961167), (1106, 19203148), (1406, 15105748), (1501, 14149688), (2072, 10250329), (2212, 9601574), (2812, 7552874), (2923, 7266056), (3002, 7074844), (4424, 4800787), (4921, 4315928), (5624, 3776437), (5846, 3633028), (6004, 3537422), (6829, 3110072), (9842, 2157964), (10507, 2021384), (11692, 1816514), (12008, 1768711), (13658, 1555036), (19684, 1078982), (20461, 1038008), (21014, 1010692), (23384, 908257), (27316, 777518), (39368, 539491), (40922, 519004), (42028, 505346), (47803, 444296), (54632, 388759), (55537, 382424), (81844, 259502), (84056, 252673), (95606, 222148), (111074, 191212), (129751, 163688)]