991550975

素因数分解:

$5^2\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{97}}^1\times {\mathrm{257}}^1$

素因数の和:444

約数の個数: 48

約数和(自身を含む): 1310520288

約数和(自身を除く): 318969313

約数列:

[1, 5, 25, 37, 43, 97, 185, 215, 257, 485, 925, 1075, 1285, 1591, 2425, 3589, 4171, 6425, 7955, 9509, 11051, 17945, 20855, 24929, 39775, 47545, 55255, 89725, 104275, 124645, 154327, 237725, 276275, 408887, 623225, 771635, 922373, 1071947, 2044435, 3858175, 4611865, 5359735, 10222175, 23059325, 26798675, 39662039, 198310195, 991550975]

約数ペア:

[(1, 991550975), (5, 198310195), (25, 39662039), (37, 26798675), (43, 23059325), (97, 10222175), (185, 5359735), (215, 4611865), (257, 3858175), (485, 2044435), (925, 1071947), (1075, 922373), (1285, 771635), (1591, 623225), (2425, 408887), (3589, 276275), (4171, 237725), (6425, 154327), (7955, 124645), (9509, 104275), (11051, 89725), (17945, 55255), (20855, 47545), (24929, 39775)]