20606721

素因数分解:

$3^1\times {\mathrm{67}}^1\times {\mathrm{157}}^1\times {\mathrm{653}}^1$

素因数の和:880

約数の個数: 16

約数和(自身を含む): 28106304

約数和(自身を除く): 7499583

約数列:

[1, 3, 67, 157, 201, 471, 653, 1959, 10519, 31557, 43751, 102521, 131253, 307563, 6868907, 20606721]

約数ペア:

[(1, 20606721), (3, 6868907), (67, 307563), (157, 131253), (201, 102521), (471, 43751), (653, 31557), (1959, 10519)]