21197055

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{128467}}^1$

素因数の和:128486

約数の個数: 16

約数和(自身を含む): 36998784

約数和(自身を除く): 15801729

約数列:

[1, 3, 5, 11, 15, 33, 55, 165, 128467, 385401, 642335, 1413137, 1927005, 4239411, 7065685, 21197055]

約数ペア:

[(1, 21197055), (3, 7065685), (5, 4239411), (11, 1927005), (15, 1413137), (33, 642335), (55, 385401), (165, 128467)]