21409299

素因数分解:

$3^3\times {\mathrm{47}}^1\times {\mathrm{16871}}^1$

素因数の和:16927

約数の個数: 16

約数和(自身を含む): 32394240

約数和(自身を除く): 10984941

約数列:

[1, 3, 9, 27, 47, 141, 423, 1269, 16871, 50613, 151839, 455517, 792937, 2378811, 7136433, 21409299]

約数ペア:

[(1, 21409299), (3, 7136433), (9, 2378811), (27, 792937), (47, 455517), (141, 151839), (423, 50613), (1269, 16871)]