28638729

素因数分解:

$3^2\times 7^1\times {\mathrm{233}}^1\times {\mathrm{1951}}^1$

素因数の和:2197

約数の個数: 24

約数和(自身を含む): 47503872

約数和(自身を除く): 18865143

約数列:

[1, 3, 7, 9, 21, 63, 233, 699, 1631, 1951, 2097, 4893, 5853, 13657, 14679, 17559, 40971, 122913, 454583, 1363749, 3182081, 4091247, 9546243, 28638729]

約数ペア:

[(1, 28638729), (3, 9546243), (7, 4091247), (9, 3182081), (21, 1363749), (63, 454583), (233, 122913), (699, 40971), (1631, 17559), (1951, 14679), (2097, 13657), (4893, 5853)]