21012544

素因数分解:

$2^6\times 7^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{89}}^1$

素因数の和:156

約数の個数: 112

約数和(自身を含む): 52669440

約数和(自身を除く): 31656896

約数列:

[1, 2, 4, 7, 8, 14, 16, 17, 28, 31, 32, 34, 56, 62, 64, 68, 89, 112, 119, 124, 136, 178, 217, 224, 238, 248, 272, 356, 434, 448, 476, 496, 527, 544, 623, 712, 868, 952, 992, 1054, 1088, 1246, 1424, 1513, 1736, 1904, 1984, 2108, 2492, 2759, 2848, 3026, 3472, 3689, 3808, 4216, 4984, 5518, 5696, 6052, 6944, 7378, 7616, 8432, 9968, 10591, 11036, 12104, 13888, 14756, 16864, 19313, 19936, 21182, 22072, 24208, 29512, 33728, 38626, 39872, 42364, 44144, 46903, 48416, 59024, 77252, 84728, 88288, 93806, 96832, 118048, 154504, 169456, 176576, 187612, 236096, 309008, 328321, 338912, 375224, 618016, 656642, 677824, 750448, 1236032, 1313284, 1500896, 2626568, 3001792, 5253136, 10506272, 21012544]

約数ペア:

[(1, 21012544), (2, 10506272), (4, 5253136), (7, 3001792), (8, 2626568), (14, 1500896), (16, 1313284), (17, 1236032), (28, 750448), (31, 677824), (32, 656642), (34, 618016), (56, 375224), (62, 338912), (64, 328321), (68, 309008), (89, 236096), (112, 187612), (119, 176576), (124, 169456), (136, 154504), (178, 118048), (217, 96832), (224, 93806), (238, 88288), (248, 84728), (272, 77252), (356, 59024), (434, 48416), (448, 46903), (476, 44144), (496, 42364), (527, 39872), (544, 38626), (623, 33728), (712, 29512), (868, 24208), (952, 22072), (992, 21182), (1054, 19936), (1088, 19313), (1246, 16864), (1424, 14756), (1513, 13888), (1736, 12104), (1904, 11036), (1984, 10591), (2108, 9968), (2492, 8432), (2759, 7616), (2848, 7378), (3026, 6944), (3472, 6052), (3689, 5696), (3808, 5518), (4216, 4984)]