19947081

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{86351}}^1$

素因数の和:86372

約数の個数: 16

約数和(自身を含む): 33159168

約数和(自身を除く): 13212087

約数列:

[1, 3, 7, 11, 21, 33, 77, 231, 86351, 259053, 604457, 949861, 1813371, 2849583, 6649027, 19947081]

約数ペア:

[(1, 19947081), (3, 6649027), (7, 2849583), (11, 1813371), (21, 949861), (33, 604457), (77, 259053), (231, 86351)]