20808301977

素因数分解:

$3^4\times {\mathrm{109}}^1\times {\mathrm{2356813}}^1$

素因数の和:2356934

約数の個数: 20

約数和(自身を含む): 31369194340

約数和(自身を除く): 10560892363

約数列:

[1, 3, 9, 27, 81, 109, 327, 981, 2943, 8829, 2356813, 7070439, 21211317, 63633951, 190901853, 256892617, 770677851, 2312033553, 6936100659, 20808301977]

約数ペア:

[(1, 20808301977), (3, 6936100659), (9, 2312033553), (27, 770677851), (81, 256892617), (109, 190901853), (327, 63633951), (981, 21211317), (2943, 7070439), (8829, 2356813)]