19924255

素因数分解:

$5^1\times {\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{73}}^1$

素因数の和:140

約数の個数: 48

約数和(自身を含む): 29250720

約数和(自身を除く): 9326465

約数列:

[1, 5, 13, 17, 19, 65, 73, 85, 95, 169, 221, 247, 323, 365, 845, 949, 1105, 1235, 1241, 1387, 1615, 2873, 3211, 4199, 4745, 6205, 6935, 12337, 14365, 16055, 16133, 18031, 20995, 23579, 54587, 61685, 80665, 90155, 117895, 209729, 234403, 272935, 306527, 1048645, 1172015, 1532635, 3984851, 19924255]

約数ペア:

[(1, 19924255), (5, 3984851), (13, 1532635), (17, 1172015), (19, 1048645), (65, 306527), (73, 272935), (85, 234403), (95, 209729), (169, 117895), (221, 90155), (247, 80665), (323, 61685), (365, 54587), (845, 23579), (949, 20995), (1105, 18031), (1235, 16133), (1241, 16055), (1387, 14365), (1615, 12337), (2873, 6935), (3211, 6205), (4199, 4745)]