21579579

素因数分解:

$3^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{20149}}^1$

素因数の和:20179

約数の個数: 24

約数和(自身を含む): 37720800

約数和(自身を除く): 16141221

約数列:

[1, 3, 7, 9, 17, 21, 51, 63, 119, 153, 357, 1071, 20149, 60447, 141043, 181341, 342533, 423129, 1027599, 1269387, 2397731, 3082797, 7193193, 21579579]

約数ペア:

[(1, 21579579), (3, 7193193), (7, 3082797), (9, 2397731), (17, 1269387), (21, 1027599), (51, 423129), (63, 342533), (119, 181341), (153, 141043), (357, 60447), (1071, 20149)]