19957912

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{191903}}^1$

素因数の和:191922

約数の個数: 16

約数和(自身を含む): 40299840

約数和(自身を除く): 20341928

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 191903, 383806, 767612, 1535224, 2494739, 4989478, 9978956, 19957912]

約数ペア:

[(1, 19957912), (2, 9978956), (4, 4989478), (8, 2494739), (13, 1535224), (26, 767612), (52, 383806), (104, 191903)]