19991169

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{113}}^1\times {\mathrm{1787}}^1$

素因数の和:1917

約数の個数: 24

約数和(自身を含む): 31797792

約数和(自身を除く): 11806623

約数列:

[1, 3, 9, 11, 33, 99, 113, 339, 1017, 1243, 1787, 3729, 5361, 11187, 16083, 19657, 58971, 176913, 201931, 605793, 1817379, 2221241, 6663723, 19991169]

約数ペア:

[(1, 19991169), (3, 6663723), (9, 2221241), (11, 1817379), (33, 605793), (99, 201931), (113, 176913), (339, 58971), (1017, 19657), (1243, 16083), (1787, 11187), (3729, 5361)]