20391755

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{127}}^1\times {\mathrm{1889}}^1$

素因数の和:2038

約数の個数: 16

約数和(自身を含む): 26127360

約数和(自身を除く): 5735605

約数列:

[1, 5, 17, 85, 127, 635, 1889, 2159, 9445, 10795, 32113, 160565, 239903, 1199515, 4078351, 20391755]

約数ペア:

[(1, 20391755), (5, 4078351), (17, 1199515), (85, 239903), (127, 160565), (635, 32113), (1889, 10795), (2159, 9445)]