21631272

素因数分解:

$2^3\times 3^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{89}}^1$

素因数の和:171

約数の個数: 128

約数和(自身を含む): 63504000

約数和(自身を除く): 41872728

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 19, 24, 26, 38, 39, 41, 52, 57, 76, 78, 82, 89, 104, 114, 123, 152, 156, 164, 178, 228, 246, 247, 267, 312, 328, 356, 456, 492, 494, 533, 534, 712, 741, 779, 984, 988, 1066, 1068, 1157, 1482, 1558, 1599, 1691, 1976, 2132, 2136, 2314, 2337, 2964, 3116, 3198, 3382, 3471, 3649, 4264, 4628, 4674, 5073, 5928, 6232, 6396, 6764, 6942, 7298, 9256, 9348, 10127, 10146, 10947, 12792, 13528, 13884, 14596, 18696, 20254, 20292, 21894, 21983, 27768, 29192, 30381, 40508, 40584, 43788, 43966, 47437, 60762, 65949, 69331, 81016, 87576, 87932, 94874, 121524, 131898, 138662, 142311, 175864, 189748, 207993, 243048, 263796, 277324, 284622, 379496, 415986, 527592, 554648, 569244, 831972, 901303, 1138488, 1663944, 1802606, 2703909, 3605212, 5407818, 7210424, 10815636, 21631272]

約数ペア:

[(1, 21631272), (2, 10815636), (3, 7210424), (4, 5407818), (6, 3605212), (8, 2703909), (12, 1802606), (13, 1663944), (19, 1138488), (24, 901303), (26, 831972), (38, 569244), (39, 554648), (41, 527592), (52, 415986), (57, 379496), (76, 284622), (78, 277324), (82, 263796), (89, 243048), (104, 207993), (114, 189748), (123, 175864), (152, 142311), (156, 138662), (164, 131898), (178, 121524), (228, 94874), (246, 87932), (247, 87576), (267, 81016), (312, 69331), (328, 65949), (356, 60762), (456, 47437), (492, 43966), (494, 43788), (533, 40584), (534, 40508), (712, 30381), (741, 29192), (779, 27768), (984, 21983), (988, 21894), (1066, 20292), (1068, 20254), (1157, 18696), (1482, 14596), (1558, 13884), (1599, 13528), (1691, 12792), (1976, 10947), (2132, 10146), (2136, 10127), (2314, 9348), (2337, 9256), (2964, 7298), (3116, 6942), (3198, 6764), (3382, 6396), (3471, 6232), (3649, 5928), (4264, 5073), (4628, 4674)]