21705057

素因数分解:

$3^3\times {\mathrm{11}}^1\times {\mathrm{107}}^1\times {\mathrm{683}}^1$

素因数の和:810

約数の個数: 32

約数和(自身を含む): 35458560

約数和(自身を除く): 13753503

約数列:

[1, 3, 9, 11, 27, 33, 99, 107, 297, 321, 683, 963, 1177, 2049, 2889, 3531, 6147, 7513, 10593, 18441, 22539, 31779, 67617, 73081, 202851, 219243, 657729, 803891, 1973187, 2411673, 7235019, 21705057]

約数ペア:

[(1, 21705057), (3, 7235019), (9, 2411673), (11, 1973187), (27, 803891), (33, 657729), (99, 219243), (107, 202851), (297, 73081), (321, 67617), (683, 31779), (963, 22539), (1177, 18441), (2049, 10593), (2889, 7513), (3531, 6147)]