642675

素因数分解:

$3^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1$

素因数の和:84

約数の個数: 48

約数和(自身を含む): 1249920

約数和(自身を除く): 607245

約数列:

[1, 3, 5, 11, 15, 19, 25, 33, 41, 55, 57, 75, 95, 123, 165, 205, 209, 275, 285, 451, 475, 615, 627, 779, 825, 1025, 1045, 1353, 1425, 2255, 2337, 3075, 3135, 3895, 5225, 6765, 8569, 11275, 11685, 15675, 19475, 25707, 33825, 42845, 58425, 128535, 214225, 642675]

約数ペア:

[(1, 642675), (3, 214225), (5, 128535), (11, 58425), (15, 42845), (19, 33825), (25, 25707), (33, 19475), (41, 15675), (55, 11685), (57, 11275), (75, 8569), (95, 6765), (123, 5225), (165, 3895), (205, 3135), (209, 3075), (275, 2337), (285, 2255), (451, 1425), (475, 1353), (615, 1045), (627, 1025), (779, 825)]