20123006981

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{12611}}^1$

素因数の和:12722

約数の個数: 64

約数和(自身を含む): 28244422656

約数和(自身を除く): 8121415675

約数列:

[1, 7, 11, 17, 23, 53, 77, 119, 161, 187, 253, 371, 391, 583, 901, 1219, 1309, 1771, 2737, 4081, 4301, 6307, 8533, 9911, 12611, 13409, 20723, 30107, 69377, 88277, 93863, 138721, 145061, 214387, 227953, 290053, 668383, 971047, 1500709, 1595671, 2030371, 2358257, 3190583, 4678681, 4930901, 7352213, 11362511, 15372809, 16507799, 22334081, 34516307, 51465491, 54239911, 79537577, 107609663, 124987621, 169100899, 261337753, 379679377, 874913347, 1183706293, 1829364271, 2874715283, 20123006981]

約数ペア:

[(1, 20123006981), (7, 2874715283), (11, 1829364271), (17, 1183706293), (23, 874913347), (53, 379679377), (77, 261337753), (119, 169100899), (161, 124987621), (187, 107609663), (253, 79537577), (371, 54239911), (391, 51465491), (583, 34516307), (901, 22334081), (1219, 16507799), (1309, 15372809), (1771, 11362511), (2737, 7352213), (4081, 4930901), (4301, 4678681), (6307, 3190583), (8533, 2358257), (9911, 2030371), (12611, 1595671), (13409, 1500709), (20723, 971047), (30107, 668383), (69377, 290053), (88277, 227953), (93863, 214387), (138721, 145061)]