81871608

素因数分解:

$2^3\times 3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{1973}}^1$

素因数の和:2021

約数の個数: 128

約数和(自身を含む): 265305600

約数和(自身を除く): 183433992

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 13, 14, 19, 21, 24, 26, 28, 38, 39, 42, 52, 56, 57, 76, 78, 84, 91, 104, 114, 133, 152, 156, 168, 182, 228, 247, 266, 273, 312, 364, 399, 456, 494, 532, 546, 728, 741, 798, 988, 1064, 1092, 1482, 1596, 1729, 1973, 1976, 2184, 2964, 3192, 3458, 3946, 5187, 5919, 5928, 6916, 7892, 10374, 11838, 13811, 13832, 15784, 20748, 23676, 25649, 27622, 37487, 41433, 41496, 47352, 51298, 55244, 74974, 76947, 82866, 102596, 110488, 112461, 149948, 153894, 165732, 179543, 205192, 224922, 262409, 299896, 307788, 331464, 359086, 449844, 487331, 524818, 538629, 615576, 718172, 787227, 899688, 974662, 1049636, 1077258, 1436344, 1461993, 1574454, 1949324, 2099272, 2154516, 2923986, 3148908, 3411317, 3898648, 4309032, 5847972, 6297816, 6822634, 10233951, 11695944, 13645268, 20467902, 27290536, 40935804, 81871608]

約数ペア:

[(1, 81871608), (2, 40935804), (3, 27290536), (4, 20467902), (6, 13645268), (7, 11695944), (8, 10233951), (12, 6822634), (13, 6297816), (14, 5847972), (19, 4309032), (21, 3898648), (24, 3411317), (26, 3148908), (28, 2923986), (38, 2154516), (39, 2099272), (42, 1949324), (52, 1574454), (56, 1461993), (57, 1436344), (76, 1077258), (78, 1049636), (84, 974662), (91, 899688), (104, 787227), (114, 718172), (133, 615576), (152, 538629), (156, 524818), (168, 487331), (182, 449844), (228, 359086), (247, 331464), (266, 307788), (273, 299896), (312, 262409), (364, 224922), (399, 205192), (456, 179543), (494, 165732), (532, 153894), (546, 149948), (728, 112461), (741, 110488), (798, 102596), (988, 82866), (1064, 76947), (1092, 74974), (1482, 55244), (1596, 51298), (1729, 47352), (1973, 41496), (1976, 41433), (2184, 37487), (2964, 27622), (3192, 25649), (3458, 23676), (3946, 20748), (5187, 15784), (5919, 13832), (5928, 13811), (6916, 11838), (7892, 10374)]