18909997

素因数分解:

${\mathrm{19}}^1\times {\mathrm{37}}^2\times {\mathrm{727}}^1$

素因数の和:820

約数の個数: 12

約数和(自身を含む): 20485920

約数和(自身を除く): 1575923

約数列:

[1, 19, 37, 703, 727, 1369, 13813, 26011, 26899, 511081, 995263, 18909997]

約数ペア:

[(1, 18909997), (19, 995263), (37, 511081), (703, 26899), (727, 26011), (1369, 13813)]