18389995

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{12301}}^1$

素因数の和:12342

約数の個数: 16

約数和(自身を含む): 24800832

約数和(自身を除く): 6410837

約数列:

[1, 5, 13, 23, 65, 115, 299, 1495, 12301, 61505, 159913, 282923, 799565, 1414615, 3677999, 18389995]

約数ペア:

[(1, 18389995), (5, 3677999), (13, 1414615), (23, 799565), (65, 282923), (115, 159913), (299, 61505), (1495, 12301)]