28070217

素因数分解:

$3^2\times 7^1\times {\mathrm{113}}^1\times {\mathrm{3943}}^1$

素因数の和:4069

約数の個数: 24

約数和(自身を含む): 46760064

約数和(自身を除く): 18689847

約数列:

[1, 3, 7, 9, 21, 63, 113, 339, 791, 1017, 2373, 3943, 7119, 11829, 27601, 35487, 82803, 248409, 445559, 1336677, 3118913, 4010031, 9356739, 28070217]

約数ペア:

[(1, 28070217), (3, 9356739), (7, 4010031), (9, 3118913), (21, 1336677), (63, 445559), (113, 248409), (339, 82803), (791, 35487), (1017, 27601), (2373, 11829), (3943, 7119)]