21287967

素因数分解:

$3^1\times {\mathrm{43}}^1\times {\mathrm{59}}^1\times {\mathrm{2797}}^1$

素因数の和:2902

約数の個数: 16

約数和(自身を含む): 29546880

約数和(自身を除く): 8258913

約数列:

[1, 3, 43, 59, 129, 177, 2537, 2797, 7611, 8391, 120271, 165023, 360813, 495069, 7095989, 21287967]

約数ペア:

[(1, 21287967), (3, 7095989), (43, 495069), (59, 360813), (129, 165023), (177, 120271), (2537, 8391), (2797, 7611)]