20515539

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{59}}^1\times {\mathrm{257}}^1$

素因数の和:371

約数の個数: 32

約数和(自身を含む): 31207680

約数和(自身を除く): 10692141

約数列:

[1, 3, 11, 33, 41, 59, 123, 177, 257, 451, 649, 771, 1353, 1947, 2419, 2827, 7257, 8481, 10537, 15163, 26609, 31611, 45489, 79827, 115907, 166793, 347721, 500379, 621683, 1865049, 6838513, 20515539]

約数ペア:

[(1, 20515539), (3, 6838513), (11, 1865049), (33, 621683), (41, 500379), (59, 347721), (123, 166793), (177, 115907), (257, 79827), (451, 45489), (649, 31611), (771, 26609), (1353, 15163), (1947, 10537), (2419, 8481), (2827, 7257)]