278301309

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{89}}^1\times {\mathrm{197}}^1$

素因数の和:350

約数の個数: 64

約数和(自身を含む): 455051520

約数和(自身を除く): 176750211

約数列:

[1, 3, 11, 13, 33, 37, 39, 89, 111, 143, 197, 267, 407, 429, 481, 591, 979, 1157, 1221, 1443, 2167, 2561, 2937, 3293, 3471, 5291, 6501, 7289, 7683, 9879, 12727, 15873, 17533, 21867, 28171, 36223, 38181, 42809, 52599, 80179, 84513, 94757, 108669, 128427, 192863, 227929, 240537, 284271, 470899, 578589, 648721, 683787, 1042327, 1412697, 1946163, 2507219, 3126981, 7135931, 7521657, 8433373, 21407793, 25300119, 92767103, 278301309]

約数ペア:

[(1, 278301309), (3, 92767103), (11, 25300119), (13, 21407793), (33, 8433373), (37, 7521657), (39, 7135931), (89, 3126981), (111, 2507219), (143, 1946163), (197, 1412697), (267, 1042327), (407, 683787), (429, 648721), (481, 578589), (591, 470899), (979, 284271), (1157, 240537), (1221, 227929), (1443, 192863), (2167, 128427), (2561, 108669), (2937, 94757), (3293, 84513), (3471, 80179), (5291, 52599), (6501, 42809), (7289, 38181), (7683, 36223), (9879, 28171), (12727, 21867), (15873, 17533)]