20540513

素因数分解:

$7^1\times {\mathrm{37}}^1\times {\mathrm{71}}^1\times {\mathrm{1117}}^1$

素因数の和:1232

約数の個数: 16

約数和(自身を含む): 24470784

約数和(自身を除く): 3930271

約数列:

[1, 7, 37, 71, 259, 497, 1117, 2627, 7819, 18389, 41329, 79307, 289303, 555149, 2934359, 20540513]

約数ペア:

[(1, 20540513), (7, 2934359), (37, 555149), (71, 289303), (259, 79307), (497, 41329), (1117, 18389), (2627, 7819)]