21444272

素因数分解:

$2^4\times {\mathrm{43}}^1\times {\mathrm{71}}^1\times {\mathrm{439}}^1$

素因数の和:561

約数の個数: 40

約数和(自身を含む): 43211520

約数和(自身を除く): 21767248

約数列:

[1, 2, 4, 8, 16, 43, 71, 86, 142, 172, 284, 344, 439, 568, 688, 878, 1136, 1756, 3053, 3512, 6106, 7024, 12212, 18877, 24424, 31169, 37754, 48848, 62338, 75508, 124676, 151016, 249352, 302032, 498704, 1340267, 2680534, 5361068, 10722136, 21444272]

約数ペア:

[(1, 21444272), (2, 10722136), (4, 5361068), (8, 2680534), (16, 1340267), (43, 498704), (71, 302032), (86, 249352), (142, 151016), (172, 124676), (284, 75508), (344, 62338), (439, 48848), (568, 37754), (688, 31169), (878, 24424), (1136, 18877), (1756, 12212), (3053, 7024), (3512, 6106)]