21778288

素因数分解:

$2^4\times 7^1\times {\mathrm{337}}^1\times {\mathrm{577}}^1$

素因数の和:929

約数の個数: 40

約数和(自身を含む): 48450272

約数和(自身を除く): 26671984

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 337, 577, 674, 1154, 1348, 2308, 2359, 2696, 4039, 4616, 4718, 5392, 8078, 9232, 9436, 16156, 18872, 32312, 37744, 64624, 194449, 388898, 777796, 1361143, 1555592, 2722286, 3111184, 5444572, 10889144, 21778288]

約数ペア:

[(1, 21778288), (2, 10889144), (4, 5444572), (7, 3111184), (8, 2722286), (14, 1555592), (16, 1361143), (28, 777796), (56, 388898), (112, 194449), (337, 64624), (577, 37744), (674, 32312), (1154, 18872), (1348, 16156), (2308, 9436), (2359, 9232), (2696, 8078), (4039, 5392), (4616, 4718)]