20807721

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{67}}^1\times {\mathrm{3137}}^1$

素因数の和:3221

約数の個数: 24

約数和(自身を含む): 33287904

約数和(自身を除く): 12480183

約数列:

[1, 3, 9, 11, 33, 67, 99, 201, 603, 737, 2211, 3137, 6633, 9411, 28233, 34507, 103521, 210179, 310563, 630537, 1891611, 2311969, 6935907, 20807721]

約数ペア:

[(1, 20807721), (3, 6935907), (9, 2311969), (11, 1891611), (33, 630537), (67, 310563), (99, 210179), (201, 103521), (603, 34507), (737, 28233), (2211, 9411), (3137, 6633)]