21000519351

素因数分解:

$3^4\times 7^1\times {\mathrm{37037953}}^1$

素因数の和:37037972

約数の個数: 20

約数和(自身を含む): 35852739472

約数和(自身を除く): 14852220121

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 567, 37037953, 111113859, 259265671, 333341577, 777797013, 1000024731, 2333391039, 3000074193, 7000173117, 21000519351]

約数ペア:

[(1, 21000519351), (3, 7000173117), (7, 3000074193), (9, 2333391039), (21, 1000024731), (27, 777797013), (63, 333341577), (81, 259265671), (189, 111113859), (567, 37037953)]