81331565

素因数分解:

$5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{1423}}^1$

素因数の和:1529

約数の個数: 32

約数和(自身を含む): 118112256

約数和(自身を除く): 36780691

約数列:

[1, 5, 7, 23, 35, 71, 115, 161, 355, 497, 805, 1423, 1633, 2485, 7115, 8165, 9961, 11431, 32729, 49805, 57155, 101033, 163645, 229103, 505165, 707231, 1145515, 2323759, 3536155, 11618795, 16266313, 81331565]

約数ペア:

[(1, 81331565), (5, 16266313), (7, 11618795), (23, 3536155), (35, 2323759), (71, 1145515), (115, 707231), (161, 505165), (355, 229103), (497, 163645), (805, 101033), (1423, 57155), (1633, 49805), (2485, 32729), (7115, 11431), (8165, 9961)]