20780529

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{89959}}^1$

素因数の和:89980

約数の個数: 16

約数和(自身を含む): 34544640

約数和(自身を除く): 13764111

約数列:

[1, 3, 7, 11, 21, 33, 77, 231, 89959, 269877, 629713, 989549, 1889139, 2968647, 6926843, 20780529]

約数ペア:

[(1, 20780529), (3, 6926843), (7, 2968647), (11, 1889139), (21, 989549), (33, 629713), (77, 269877), (231, 89959)]