20803713

素因数分解:

$3^1\times 7^1\times {\mathrm{139}}^1\times {\mathrm{7127}}^1$

素因数の和:7276

約数の個数: 16

約数和(自身を含む): 31933440

約数和(自身を除く): 11129727

約数列:

[1, 3, 7, 21, 139, 417, 973, 2919, 7127, 21381, 49889, 149667, 990653, 2971959, 6934571, 20803713]

約数ペア:

[(1, 20803713), (3, 6934571), (7, 2971959), (21, 990653), (139, 149667), (417, 49889), (973, 21381), (2919, 7127)]