81051820

素因数分解:

$2^2\times 5^1\times {\mathrm{661}}^1\times {\mathrm{6131}}^1$

素因数の和:6801

約数の個数: 24

約数和(自身を含む): 170494128

約数和(自身を除く): 89442308

約数列:

[1, 2, 4, 5, 10, 20, 661, 1322, 2644, 3305, 6131, 6610, 12262, 13220, 24524, 30655, 61310, 122620, 4052591, 8105182, 16210364, 20262955, 40525910, 81051820]

約数ペア:

[(1, 81051820), (2, 40525910), (4, 20262955), (5, 16210364), (10, 8105182), (20, 4052591), (661, 122620), (1322, 61310), (2644, 30655), (3305, 24524), (6131, 13220), (6610, 12262)]