28240289

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{97}}^1\times {\mathrm{199}}^1$

素因数の和:333

約数の個数: 32

約数和(自身を含む): 37632000

約数和(自身を除く): 9391711

約数列:

[1, 7, 11, 19, 77, 97, 133, 199, 209, 679, 1067, 1393, 1463, 1843, 2189, 3781, 7469, 12901, 15323, 19303, 20273, 26467, 41591, 135121, 141911, 212333, 291137, 366757, 1486331, 2567299, 4034327, 28240289]

約数ペア:

[(1, 28240289), (7, 4034327), (11, 2567299), (19, 1486331), (77, 366757), (97, 291137), (133, 212333), (199, 141911), (209, 135121), (679, 41591), (1067, 26467), (1393, 20273), (1463, 19303), (1843, 15323), (2189, 12901), (3781, 7469)]