21056896

素因数分解:

$2^7\times 7^1\times {\mathrm{71}}^1\times {\mathrm{331}}^1$

素因数の和:423

約数の個数: 64

約数和(自身を含む): 48764160

約数和(自身を除く): 27707264

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 64, 71, 112, 128, 142, 224, 284, 331, 448, 497, 568, 662, 896, 994, 1136, 1324, 1988, 2272, 2317, 2648, 3976, 4544, 4634, 5296, 7952, 9088, 9268, 10592, 15904, 18536, 21184, 23501, 31808, 37072, 42368, 47002, 63616, 74144, 94004, 148288, 164507, 188008, 296576, 329014, 376016, 658028, 752032, 1316056, 1504064, 2632112, 3008128, 5264224, 10528448, 21056896]

約数ペア:

[(1, 21056896), (2, 10528448), (4, 5264224), (7, 3008128), (8, 2632112), (14, 1504064), (16, 1316056), (28, 752032), (32, 658028), (56, 376016), (64, 329014), (71, 296576), (112, 188008), (128, 164507), (142, 148288), (224, 94004), (284, 74144), (331, 63616), (448, 47002), (497, 42368), (568, 37072), (662, 31808), (896, 23501), (994, 21184), (1136, 18536), (1324, 15904), (1988, 10592), (2272, 9268), (2317, 9088), (2648, 7952), (3976, 5296), (4544, 4634)]