18981908

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{151}}^1\times {\mathrm{2857}}^1$

素因数の和:3023

約数の個数: 24

約数和(自身を含む): 36490944

約数和(自身を除く): 17509036

約数列:

[1, 2, 4, 11, 22, 44, 151, 302, 604, 1661, 2857, 3322, 5714, 6644, 11428, 31427, 62854, 125708, 431407, 862814, 1725628, 4745477, 9490954, 18981908]

約数ペア:

[(1, 18981908), (2, 9490954), (4, 4745477), (11, 1725628), (22, 862814), (44, 431407), (151, 125708), (302, 62854), (604, 31427), (1661, 11428), (2857, 6644), (3322, 5714)]