21125433

素因数分解:

$3^1\times 7^1\times {\mathrm{997}}^1\times {\mathrm{1009}}^1$

素因数の和:2016

約数の個数: 16

約数和(自身を含む): 32255360

約数和(自身を除く): 11129927

約数列:

[1, 3, 7, 21, 997, 1009, 2991, 3027, 6979, 7063, 20937, 21189, 1005973, 3017919, 7041811, 21125433]

約数ペア:

[(1, 21125433), (3, 7041811), (7, 3017919), (21, 1005973), (997, 21189), (1009, 20937), (2991, 7063), (3027, 6979)]