19898795

素因数分解:

$5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{1301}}^1$

素因数の和:1355

約数の個数: 32

約数和(自身を含む): 29998080

約数和(自身を除く): 10099285

約数列:

[1, 5, 7, 19, 23, 35, 95, 115, 133, 161, 437, 665, 805, 1301, 2185, 3059, 6505, 9107, 15295, 24719, 29923, 45535, 123595, 149615, 173033, 209461, 568537, 865165, 1047305, 2842685, 3979759, 19898795]

約数ペア:

[(1, 19898795), (5, 3979759), (7, 2842685), (19, 1047305), (23, 865165), (35, 568537), (95, 209461), (115, 173033), (133, 149615), (161, 123595), (437, 45535), (665, 29923), (805, 24719), (1301, 15295), (2185, 9107), (3059, 6505)]