20646351

素因数分解:

$3^2\times {\mathrm{11}}^2\times {\mathrm{18959}}^1$

素因数の和:18987

約数の個数: 18

約数和(自身を含む): 32781840

約数和(自身を除く): 12135489

約数列:

[1, 3, 9, 11, 33, 99, 121, 363, 1089, 18959, 56877, 170631, 208549, 625647, 1876941, 2294039, 6882117, 20646351]

約数ペア:

[(1, 20646351), (3, 6882117), (9, 2294039), (11, 1876941), (33, 625647), (99, 208549), (121, 170631), (363, 56877), (1089, 18959)]