19967739

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{181}}^1\times {\mathrm{3343}}^1$

素因数の和:3538

約数の個数: 16

約数和(自身を含む): 29213184

約数和(自身を除く): 9245445

約数列:

[1, 3, 11, 33, 181, 543, 1991, 3343, 5973, 10029, 36773, 110319, 605083, 1815249, 6655913, 19967739]

約数ペア:

[(1, 19967739), (3, 6655913), (11, 1815249), (33, 605083), (181, 110319), (543, 36773), (1991, 10029), (3343, 5973)]