20781535

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{9511}}^1$

素因数の和:9558

約数の個数: 16

約数和(自身を含む): 27394560

約数和(自身を除く): 6613025

約数列:

[1, 5, 19, 23, 95, 115, 437, 2185, 9511, 47555, 180709, 218753, 903545, 1093765, 4156307, 20781535]

約数ペア:

[(1, 20781535), (5, 4156307), (19, 1093765), (23, 903545), (95, 218753), (115, 180709), (437, 47555), (2185, 9511)]