20437911

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{307}}^1\times {\mathrm{569}}^1$

素因数の和:895

約数の個数: 24

約数和(自身を含む): 31951920

約数和(自身を除く): 11514009

約数列:

[1, 3, 9, 13, 39, 117, 307, 569, 921, 1707, 2763, 3991, 5121, 7397, 11973, 22191, 35919, 66573, 174683, 524049, 1572147, 2270879, 6812637, 20437911]

約数ペア:

[(1, 20437911), (3, 6812637), (9, 2270879), (13, 1572147), (39, 524049), (117, 174683), (307, 66573), (569, 35919), (921, 22191), (1707, 11973), (2763, 7397), (3991, 5121)]