20684739

素因数分解:

$3^1\times {\mathrm{37}}^1\times {\mathrm{307}}^1\times {\mathrm{607}}^1$

素因数の和:954

約数の個数: 16

約数和(自身を含む): 28464128

約数和(自身を除く): 7779389

約数列:

[1, 3, 37, 111, 307, 607, 921, 1821, 11359, 22459, 34077, 67377, 186349, 559047, 6894913, 20684739]

約数ペア:

[(1, 20684739), (3, 6894913), (37, 559047), (111, 186349), (307, 67377), (607, 34077), (921, 22459), (1821, 11359)]