20777967

素因数分解:

$3^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{10639}}^1$

素因数の和:10683

約数の個数: 24

約数和(自身を含む): 35409920

約数和(自身を除く): 14631953

約数列:

[1, 3, 7, 9, 21, 31, 63, 93, 217, 279, 651, 1953, 10639, 31917, 74473, 95751, 223419, 329809, 670257, 989427, 2308663, 2968281, 6925989, 20777967]

約数ペア:

[(1, 20777967), (3, 6925989), (7, 2968281), (9, 2308663), (21, 989427), (31, 670257), (63, 329809), (93, 223419), (217, 95751), (279, 74473), (651, 31917), (1953, 10639)]