21742215

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{131771}}^1$

素因数の和:131790

約数の個数: 16

約数和(自身を含む): 37950336

約数和(自身を除く): 16208121

約数列:

[1, 3, 5, 11, 15, 33, 55, 165, 131771, 395313, 658855, 1449481, 1976565, 4348443, 7247405, 21742215]

約数ペア:

[(1, 21742215), (3, 7247405), (5, 4348443), (11, 1976565), (15, 1449481), (33, 658855), (55, 395313), (165, 131771)]