21012609

素因数分解:

$3^1\times {\mathrm{61}}^1\times {\mathrm{199}}^1\times {\mathrm{577}}^1$

素因数の和:840

約数の個数: 16

約数和(自身を含む): 28668800

約数和(自身を除く): 7656191

約数列:

[1, 3, 61, 183, 199, 577, 597, 1731, 12139, 35197, 36417, 105591, 114823, 344469, 7004203, 21012609]

約数ペア:

[(1, 21012609), (3, 7004203), (61, 344469), (183, 114823), (199, 105591), (577, 36417), (597, 35197), (1731, 12139)]