81373515

素因数分解:

$3^1\times 5^1\times {\mathrm{263}}^1\times {\mathrm{20627}}^1$

素因数の和:20898

約数の個数: 16

約数和(自身を含む): 130699008

約数和(自身を除く): 49325493

約数列:

[1, 3, 5, 15, 263, 789, 1315, 3945, 20627, 61881, 103135, 309405, 5424901, 16274703, 27124505, 81373515]

約数ペア:

[(1, 81373515), (3, 27124505), (5, 16274703), (15, 5424901), (263, 309405), (789, 103135), (1315, 61881), (3945, 20627)]