15705981

素因数分解:

$3^4\times {\mathrm{71}}^1\times {\mathrm{2731}}^1$

素因数の和:2814

約数の個数: 20

約数和(自身を含む): 23801184

約数和(自身を除く): 8095203

約数列:

[1, 3, 9, 27, 71, 81, 213, 639, 1917, 2731, 5751, 8193, 24579, 73737, 193901, 221211, 581703, 1745109, 5235327, 15705981]

約数ペア:

[(1, 15705981), (3, 5235327), (9, 1745109), (27, 581703), (71, 221211), (81, 193901), (213, 73737), (639, 24579), (1917, 8193), (2731, 5751)]