21905273

素因数分解:

${\mathrm{13}}^2\times {\mathrm{227}}^1\times {\mathrm{571}}^1$

素因数の和:824

約数の個数: 12

約数和(自身を含む): 23866128

約数和(自身を除く): 1960855

約数列:

[1, 13, 169, 227, 571, 2951, 7423, 38363, 96499, 129617, 1685021, 21905273]

約数ペア:

[(1, 21905273), (13, 1685021), (169, 129617), (227, 96499), (571, 38363), (2951, 7423)]