21871270

素因数分解:

$2^1\times 5^1\times {\mathrm{1361}}^1\times {\mathrm{1607}}^1$

素因数の和:2975

約数の個数: 16

約数和(自身を含む): 39421728

約数和(自身を除く): 17550458

約数列:

[1, 2, 5, 10, 1361, 1607, 2722, 3214, 6805, 8035, 13610, 16070, 2187127, 4374254, 10935635, 21871270]

約数ペア:

[(1, 21871270), (2, 10935635), (5, 4374254), (10, 2187127), (1361, 16070), (1607, 13610), (2722, 8035), (3214, 6805)]