206857215

素因数分解:

$3^2\times 5^1\times {\mathrm{107}}^1\times {\mathrm{42961}}^1$

素因数の和:43079

約数の個数: 24

約数和(自身を含む): 361911888

約数和(自身を除く): 155054673

約数列:

[1, 3, 5, 9, 15, 45, 107, 321, 535, 963, 1605, 4815, 42961, 128883, 214805, 386649, 644415, 1933245, 4596827, 13790481, 22984135, 41371443, 68952405, 206857215]

約数ペア:

[(1, 206857215), (3, 68952405), (5, 41371443), (9, 22984135), (15, 13790481), (45, 4596827), (107, 1933245), (321, 644415), (535, 386649), (963, 214805), (1605, 128883), (4815, 42961)]