19990565

素因数分解:

$5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{1307}}^1$

素因数の和:1361

約数の個数: 32

約数和(自身を含む): 30136320

約数和(自身を除く): 10145755

約数列:

[1, 5, 7, 19, 23, 35, 95, 115, 133, 161, 437, 665, 805, 1307, 2185, 3059, 6535, 9149, 15295, 24833, 30061, 45745, 124165, 150305, 173831, 210427, 571159, 869155, 1052135, 2855795, 3998113, 19990565]

約数ペア:

[(1, 19990565), (5, 3998113), (7, 2855795), (19, 1052135), (23, 869155), (35, 571159), (95, 210427), (115, 173831), (133, 150305), (161, 124165), (437, 45745), (665, 30061), (805, 24833), (1307, 15295), (2185, 9149), (3059, 6535)]