20730213

素因数分解:

$3^2\times 7^1\times {\mathrm{281}}^1\times {\mathrm{1171}}^1$

素因数の和:1465

約数の個数: 24

約数和(自身を含む): 34372416

約数和(自身を除く): 13642203

約数列:

[1, 3, 7, 9, 21, 63, 281, 843, 1171, 1967, 2529, 3513, 5901, 8197, 10539, 17703, 24591, 73773, 329051, 987153, 2303357, 2961459, 6910071, 20730213]

約数ペア:

[(1, 20730213), (3, 6910071), (7, 2961459), (9, 2303357), (21, 987153), (63, 329051), (281, 73773), (843, 24591), (1171, 17703), (1967, 10539), (2529, 8197), (3513, 5901)]