21089272

素因数分解:

$2^3\times {\mathrm{71}}^1\times {\mathrm{107}}^1\times {\mathrm{347}}^1$

素因数の和:531

約数の個数: 32

約数和(自身を含む): 40590720

約数和(自身を除く): 19501448

約数列:

[1, 2, 4, 8, 71, 107, 142, 214, 284, 347, 428, 568, 694, 856, 1388, 2776, 7597, 15194, 24637, 30388, 37129, 49274, 60776, 74258, 98548, 148516, 197096, 297032, 2636159, 5272318, 10544636, 21089272]

約数ペア:

[(1, 21089272), (2, 10544636), (4, 5272318), (8, 2636159), (71, 297032), (107, 197096), (142, 148516), (214, 98548), (284, 74258), (347, 60776), (428, 49274), (568, 37129), (694, 30388), (856, 24637), (1388, 15194), (2776, 7597)]