209898325

素因数分解:

$5^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{257}}^1\times {\mathrm{359}}^1$

素因数の和:646

約数の個数: 48

約数和(自身を含む): 322479360

約数和(自身を除く): 112581035

約数列:

[1, 5, 7, 13, 25, 35, 65, 91, 175, 257, 325, 359, 455, 1285, 1795, 1799, 2275, 2513, 3341, 4667, 6425, 8975, 8995, 12565, 16705, 23335, 23387, 32669, 44975, 62825, 83525, 92263, 116675, 116935, 163345, 461315, 584675, 645841, 816725, 1199419, 2306575, 3229205, 5997095, 8395933, 16146025, 29985475, 41979665, 209898325]

約数ペア:

[(1, 209898325), (5, 41979665), (7, 29985475), (13, 16146025), (25, 8395933), (35, 5997095), (65, 3229205), (91, 2306575), (175, 1199419), (257, 816725), (325, 645841), (359, 584675), (455, 461315), (1285, 163345), (1795, 116935), (1799, 116675), (2275, 92263), (2513, 83525), (3341, 62825), (4667, 44975), (6425, 32669), (8975, 23387), (8995, 23335), (12565, 16705)]