21764985

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{131909}}^1$

素因数の和:131928

約数の個数: 16

約数和(自身を含む): 37990080

約数和(自身を除く): 16225095

約数列:

[1, 3, 5, 11, 15, 33, 55, 165, 131909, 395727, 659545, 1450999, 1978635, 4352997, 7254995, 21764985]

約数ペア:

[(1, 21764985), (3, 7254995), (5, 4352997), (11, 1978635), (15, 1450999), (33, 659545), (55, 395727), (165, 131909)]