21554468

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{163}}^1\times {\mathrm{2543}}^1$

素因数の和:2723

約数の個数: 24

約数和(自身を含む): 40887168

約数和(自身を除く): 19332700

約数列:

[1, 2, 4, 13, 26, 52, 163, 326, 652, 2119, 2543, 4238, 5086, 8476, 10172, 33059, 66118, 132236, 414509, 829018, 1658036, 5388617, 10777234, 21554468]

約数ペア:

[(1, 21554468), (2, 10777234), (4, 5388617), (13, 1658036), (26, 829018), (52, 414509), (163, 132236), (326, 66118), (652, 33059), (2119, 10172), (2543, 8476), (4238, 5086)]