21254986

素因数分解:

$2^1\times {\mathrm{43}}^1\times {\mathrm{59}}^2\times {\mathrm{71}}^1$

素因数の和:234

約数の個数: 24

約数和(自身を含む): 33653664

約数和(自身を除く): 12398678

約数列:

[1, 2, 43, 59, 71, 86, 118, 142, 2537, 3053, 3481, 4189, 5074, 6106, 6962, 8378, 149683, 180127, 247151, 299366, 360254, 494302, 10627493, 21254986]

約数ペア:

[(1, 21254986), (2, 10627493), (43, 494302), (59, 360254), (71, 299366), (86, 247151), (118, 180127), (142, 149683), (2537, 8378), (3053, 6962), (3481, 6106), (4189, 5074)]