21780386

素因数分解:

$2^1\times {\mathrm{71}}^1\times {\mathrm{163}}^1\times {\mathrm{941}}^1$

素因数の和:1177

約数の個数: 16

約数和(自身を含む): 33369408

約数和(自身を除く): 11589022

約数列:

[1, 2, 71, 142, 163, 326, 941, 1882, 11573, 23146, 66811, 133622, 153383, 306766, 10890193, 21780386]

約数ペア:

[(1, 21780386), (2, 10890193), (71, 306766), (142, 153383), (163, 133622), (326, 66811), (941, 23146), (1882, 11573)]