261311679

素因数分解:

$3^2\times {\mathrm{31}}^1\times {\mathrm{607}}^1\times {\mathrm{1543}}^1$

素因数の和:2187

約数の個数: 24

約数和(自身を含む): 390520832

約数和(自身を除く): 129209153

約数列:

[1, 3, 9, 31, 93, 279, 607, 1543, 1821, 4629, 5463, 13887, 18817, 47833, 56451, 143499, 169353, 430497, 936601, 2809803, 8429409, 29034631, 87103893, 261311679]

約数ペア:

[(1, 261311679), (3, 87103893), (9, 29034631), (31, 8429409), (93, 2809803), (279, 936601), (607, 430497), (1543, 169353), (1821, 143499), (4629, 56451), (5463, 47833), (13887, 18817)]