18997655

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{233}}^1\times {\mathrm{709}}^1$

素因数の和:970

約数の個数: 16

約数和(自身を含む): 23924160

約数和(自身を除く): 4926505

約数列:

[1, 5, 23, 115, 233, 709, 1165, 3545, 5359, 16307, 26795, 81535, 165197, 825985, 3799531, 18997655]

約数ペア:

[(1, 18997655), (5, 3799531), (23, 825985), (115, 165197), (233, 81535), (709, 26795), (1165, 16307), (3545, 5359)]