26221540

素因数分解:

$2^2\times 5^1\times {\mathrm{643}}^1\times {\mathrm{2039}}^1$

素因数の和:2691

約数の個数: 24

約数和(自身を含む): 55177920

約数和(自身を除く): 28956380

約数列:

[1, 2, 4, 5, 10, 20, 643, 1286, 2039, 2572, 3215, 4078, 6430, 8156, 10195, 12860, 20390, 40780, 1311077, 2622154, 5244308, 6555385, 13110770, 26221540]

約数ペア:

[(1, 26221540), (2, 13110770), (4, 6555385), (5, 5244308), (10, 2622154), (20, 1311077), (643, 40780), (1286, 20390), (2039, 12860), (2572, 10195), (3215, 8156), (4078, 6430)]