19628675

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{137}}^1\times {\mathrm{521}}^1$

素因数の和:679

約数の個数: 24

約数和(自身を含む): 26797392

約数和(自身を除く): 7168717

約数列:

[1, 5, 11, 25, 55, 137, 275, 521, 685, 1507, 2605, 3425, 5731, 7535, 13025, 28655, 37675, 71377, 143275, 356885, 785147, 1784425, 3925735, 19628675]

約数ペア:

[(1, 19628675), (5, 3925735), (11, 1784425), (25, 785147), (55, 356885), (137, 143275), (275, 71377), (521, 37675), (685, 28655), (1507, 13025), (2605, 7535), (3425, 5731)]