81517436

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{20359}}^1$

素因数の和:20394

約数の個数: 48

約数和(自身を含む): 191546880

約数和(自身を除く): 110029444

約数列:

[1, 2, 4, 7, 11, 13, 14, 22, 26, 28, 44, 52, 77, 91, 143, 154, 182, 286, 308, 364, 572, 1001, 2002, 4004, 20359, 40718, 81436, 142513, 223949, 264667, 285026, 447898, 529334, 570052, 895796, 1058668, 1567643, 1852669, 2911337, 3135286, 3705338, 5822674, 6270572, 7410676, 11645348, 20379359, 40758718, 81517436]

約数ペア:

[(1, 81517436), (2, 40758718), (4, 20379359), (7, 11645348), (11, 7410676), (13, 6270572), (14, 5822674), (22, 3705338), (26, 3135286), (28, 2911337), (44, 1852669), (52, 1567643), (77, 1058668), (91, 895796), (143, 570052), (154, 529334), (182, 447898), (286, 285026), (308, 264667), (364, 223949), (572, 142513), (1001, 81436), (2002, 40718), (4004, 20359)]