18980294

素因数分解:

$2^1\times {\mathrm{41}}^1\times {\mathrm{211}}^1\times {\mathrm{1097}}^1$

素因数の和:1351

約数の個数: 16

約数和(自身を含む): 29329776

約数和(自身を除く): 10349482

約数列:

[1, 2, 41, 82, 211, 422, 1097, 2194, 8651, 17302, 44977, 89954, 231467, 462934, 9490147, 18980294]

約数ペア:

[(1, 18980294), (2, 9490147), (41, 462934), (82, 231467), (211, 89954), (422, 44977), (1097, 17302), (2194, 8651)]