20865207

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{67}}^1\times {\mathrm{9437}}^1$

素因数の和:9518

約数の個数: 16

約数和(自身を含む): 30805632

約数和(自身を除く): 9940425

約数列:

[1, 3, 11, 33, 67, 201, 737, 2211, 9437, 28311, 103807, 311421, 632279, 1896837, 6955069, 20865207]

約数ペア:

[(1, 20865207), (3, 6955069), (11, 1896837), (33, 632279), (67, 311421), (201, 103807), (737, 28311), (2211, 9437)]