21905085

素因数分解:

$3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{63493}}^1$

素因数の和:63524

約数の個数: 16

約数和(自身を含む): 36572544

約数和(自身を除く): 14667459

約数列:

[1, 3, 5, 15, 23, 69, 115, 345, 63493, 190479, 317465, 952395, 1460339, 4381017, 7301695, 21905085]

約数ペア:

[(1, 21905085), (3, 7301695), (5, 4381017), (15, 1460339), (23, 952395), (69, 317465), (115, 190479), (345, 63493)]