81990908

素因数分解:

$2^2\times {\mathrm{31}}^1\times {\mathrm{661217}}^1$

素因数の和:661252

約数の個数: 12

約数和(自身を含む): 148112832

約数和(自身を除く): 66121924

約数列:

[1, 2, 4, 31, 62, 124, 661217, 1322434, 2644868, 20497727, 40995454, 81990908]

約数ペア:

[(1, 81990908), (2, 40995454), (4, 20497727), (31, 2644868), (62, 1322434), (124, 661217)]