20489973

素因数分解:

$3^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{22691}}^1$

素因数の和:22744

約数の個数: 16

約数和(自身を含む): 31950336

約数和(自身を除く): 11460363

約数列:

[1, 3, 7, 21, 43, 129, 301, 903, 22691, 68073, 158837, 476511, 975713, 2927139, 6829991, 20489973]

約数ペア:

[(1, 20489973), (3, 6829991), (7, 2927139), (21, 975713), (43, 476511), (129, 158837), (301, 68073), (903, 22691)]