20990716

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{467}}^1\times {\mathrm{661}}^1$

素因数の和:1149

約数の個数: 24

約数和(自身を含む): 39036816

約数和(自身を除く): 18046100

約数列:

[1, 2, 4, 17, 34, 68, 467, 661, 934, 1322, 1868, 2644, 7939, 11237, 15878, 22474, 31756, 44948, 308687, 617374, 1234748, 5247679, 10495358, 20990716]

約数ペア:

[(1, 20990716), (2, 10495358), (4, 5247679), (17, 1234748), (34, 617374), (68, 308687), (467, 44948), (661, 31756), (934, 22474), (1322, 15878), (1868, 11237), (2644, 7939)]