81553311

素因数分解:

$3^4\times 7^1\times {\mathrm{143833}}^1$

素因数の和:143852

約数の個数: 20

約数和(自身を含む): 139231312

約数和(自身を除く): 57678001

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 567, 143833, 431499, 1006831, 1294497, 3020493, 3883491, 9061479, 11650473, 27184437, 81553311]

約数ペア:

[(1, 81553311), (3, 27184437), (7, 11650473), (9, 9061479), (21, 3883491), (27, 3020493), (63, 1294497), (81, 1006831), (189, 431499), (567, 143833)]