20866713

素因数分解:

$3^1\times 7^1\times {\mathrm{157}}^1\times {\mathrm{6329}}^1$

素因数の和:6496

約数の個数: 16

約数和(自身を含む): 32004480

約数和(自身を除く): 11137767

約数列:

[1, 3, 7, 21, 157, 471, 1099, 3297, 6329, 18987, 44303, 132909, 993653, 2980959, 6955571, 20866713]

約数ペア:

[(1, 20866713), (3, 6955571), (7, 2980959), (21, 993653), (157, 132909), (471, 44303), (1099, 18987), (3297, 6329)]