21745984

素因数分解:

$2^6\times {\mathrm{13}}^1\times {\mathrm{59}}^1\times {\mathrm{443}}^1$

素因数の和:527

約数の個数: 56

約数和(自身を含む): 47365920

約数和(自身を除く): 25619936

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 59, 64, 104, 118, 208, 236, 416, 443, 472, 767, 832, 886, 944, 1534, 1772, 1888, 3068, 3544, 3776, 5759, 6136, 7088, 11518, 12272, 14176, 23036, 24544, 26137, 28352, 46072, 49088, 52274, 92144, 104548, 184288, 209096, 339781, 368576, 418192, 679562, 836384, 1359124, 1672768, 2718248, 5436496, 10872992, 21745984]

約数ペア:

[(1, 21745984), (2, 10872992), (4, 5436496), (8, 2718248), (13, 1672768), (16, 1359124), (26, 836384), (32, 679562), (52, 418192), (59, 368576), (64, 339781), (104, 209096), (118, 184288), (208, 104548), (236, 92144), (416, 52274), (443, 49088), (472, 46072), (767, 28352), (832, 26137), (886, 24544), (944, 23036), (1534, 14176), (1772, 12272), (1888, 11518), (3068, 7088), (3544, 6136), (3776, 5759)]