21042128303

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{61}}^1\times {\mathrm{60317}}^1$

素因数の和:60447

約数の個数: 32

約数和(自身を含む): 26327600640

約数和(自身を除く): 5285472337

約数列:

[1, 7, 19, 43, 61, 133, 301, 427, 817, 1159, 2623, 5719, 8113, 18361, 49837, 60317, 348859, 422219, 1146023, 2593631, 3679337, 8022161, 18155417, 25755359, 49278989, 69907403, 158211491, 344952923, 489351821, 1107480437, 3006018329, 21042128303]

約数ペア:

[(1, 21042128303), (7, 3006018329), (19, 1107480437), (43, 489351821), (61, 344952923), (133, 158211491), (301, 69907403), (427, 49278989), (817, 25755359), (1159, 18155417), (2623, 8022161), (5719, 3679337), (8113, 2593631), (18361, 1146023), (49837, 422219), (60317, 348859)]