81245515

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{317}}^1\times {\mathrm{3943}}^1$

素因数の和:4278

約数の個数: 16

約数和(自身を含む): 105352128

約数和(自身を除く): 24106613

約数列:

[1, 5, 13, 65, 317, 1585, 3943, 4121, 19715, 20605, 51259, 256295, 1249931, 6249655, 16249103, 81245515]

約数ペア:

[(1, 81245515), (5, 16249103), (13, 6249655), (65, 1249931), (317, 256295), (1585, 51259), (3943, 20605), (4121, 19715)]