81378479

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{53}}^1\times {\mathrm{359}}^1$

素因数の和:479

約数の個数: 32

約数和(自身を含む): 104509440

約数和(自身を除く): 23130961

約数列:

[1, 7, 13, 47, 53, 91, 329, 359, 371, 611, 689, 2491, 2513, 4277, 4667, 4823, 16873, 17437, 19027, 32383, 32669, 118111, 133189, 219349, 226681, 247351, 894269, 1535443, 1731457, 6259883, 11625497, 81378479]

約数ペア:

[(1, 81378479), (7, 11625497), (13, 6259883), (47, 1731457), (53, 1535443), (91, 894269), (329, 247351), (359, 226681), (371, 219349), (611, 133189), (689, 118111), (2491, 32669), (2513, 32383), (4277, 19027), (4667, 17437), (4823, 16873)]