2021691

素因数分解:

$3^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{809}}^1$

素因数の和:843

約数の個数: 24

約数和(自身を含む): 3324240

約数和(自身を除く): 1302549

約数列:

[1, 3, 7, 17, 21, 49, 51, 119, 147, 357, 809, 833, 2427, 2499, 5663, 13753, 16989, 39641, 41259, 96271, 118923, 288813, 673897, 2021691]

約数ペア:

[(1, 2021691), (3, 673897), (7, 288813), (17, 118923), (21, 96271), (49, 41259), (51, 39641), (119, 16989), (147, 13753), (357, 5663), (809, 2499), (833, 2427)]