21077912

素因数分解:

$2^3\times {\mathrm{43}}^1\times {\mathrm{71}}^1\times {\mathrm{863}}^1$

素因数の和:983

約数の個数: 32

約数和(自身を含む): 41057280

約数和(自身を除く): 19979368

約数列:

[1, 2, 4, 8, 43, 71, 86, 142, 172, 284, 344, 568, 863, 1726, 3053, 3452, 6106, 6904, 12212, 24424, 37109, 61273, 74218, 122546, 148436, 245092, 296872, 490184, 2634739, 5269478, 10538956, 21077912]

約数ペア:

[(1, 21077912), (2, 10538956), (4, 5269478), (8, 2634739), (43, 490184), (71, 296872), (86, 245092), (142, 148436), (172, 122546), (284, 74218), (344, 61273), (568, 37109), (863, 24424), (1726, 12212), (3053, 6904), (3452, 6106)]