21465565

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{443}}^1\times {\mathrm{881}}^1$

素因数の和:1340

約数の個数: 16

約数和(自身を含む): 28195776

約数和(自身を除く): 6730211

約数列:

[1, 5, 11, 55, 443, 881, 2215, 4405, 4873, 9691, 24365, 48455, 390283, 1951415, 4293113, 21465565]

約数ペア:

[(1, 21465565), (5, 4293113), (11, 1951415), (55, 390283), (443, 48455), (881, 24365), (2215, 9691), (4405, 4873)]