20896372007

素因数分解:

$7^1\times {\mathrm{19}}^2\times {\mathrm{37}}^1\times {\mathrm{223493}}^1$

素因数の和:223575

約数の個数: 24

約数和(自身を含む): 25885969056

約数和(自身を除く): 4989597049

約数列:

[1, 7, 19, 37, 133, 259, 361, 703, 2527, 4921, 13357, 93499, 223493, 1564451, 4246367, 8269241, 29724569, 57884687, 80680973, 157115579, 564766811, 1099809053, 2985196001, 20896372007]

約数ペア:

[(1, 20896372007), (7, 2985196001), (19, 1099809053), (37, 564766811), (133, 157115579), (259, 80680973), (361, 57884687), (703, 29724569), (2527, 8269241), (4921, 4246367), (13357, 1564451), (93499, 223493)]