81258009

素因数分解:

$3^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{54499}}^1$

素因数の和:54580

約数の個数: 16

約数和(自身を含む): 125568000

約数和(自身を除く): 44309991

約数列:

[1, 3, 7, 21, 71, 213, 497, 1491, 54499, 163497, 381493, 1144479, 3869429, 11608287, 27086003, 81258009]

約数ペア:

[(1, 81258009), (3, 27086003), (7, 11608287), (21, 3869429), (71, 1144479), (213, 381493), (497, 163497), (1491, 54499)]