20145752991

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{1879}}^1$

素因数の和:1990

約数の個数: 144

約数和(自身を含む): 38642572800

約数和(自身を除く): 18496819809

約数列:

[1, 3, 7, 9, 13, 19, 21, 39, 53, 57, 63, 91, 117, 133, 159, 169, 171, 247, 273, 371, 399, 477, 507, 689, 741, 819, 1007, 1113, 1183, 1197, 1521, 1729, 1879, 2067, 2223, 3021, 3211, 3339, 3549, 4823, 5187, 5637, 6201, 7049, 8957, 9063, 9633, 10647, 13091, 13153, 14469, 15561, 16911, 21147, 22477, 24427, 26871, 28899, 35701, 39273, 39459, 43407, 62699, 63441, 67431, 73281, 80613, 91637, 99587, 107103, 117819, 118377, 170183, 170989, 188097, 202293, 219843, 249907, 274911, 298761, 317551, 321309, 464113, 510549, 512967, 564291, 697109, 749721, 824733, 896283, 952653, 1191281, 1294631, 1392339, 1531647, 1538901, 1892153, 2091327, 2222857, 2249163, 2857959, 3248791, 3573843, 3883893, 4177017, 5676459, 6033469, 6273981, 6668571, 9062417, 9746373, 10721529, 11651679, 13245071, 16830203, 17029377, 18100407, 20005713, 24597989, 27187251, 29239119, 39735213, 42234283, 50490609, 54301221, 73793967, 81561753, 117811421, 119205639, 126702849, 151471827, 172185923, 221381901, 319773857, 353434263, 380108547, 516557769, 959321571, 1060302789, 1549673307, 2238416999, 2877964713, 6715250997, 20145752991]

約数ペア:

[(1, 20145752991), (3, 6715250997), (7, 2877964713), (9, 2238416999), (13, 1549673307), (19, 1060302789), (21, 959321571), (39, 516557769), (53, 380108547), (57, 353434263), (63, 319773857), (91, 221381901), (117, 172185923), (133, 151471827), (159, 126702849), (169, 119205639), (171, 117811421), (247, 81561753), (273, 73793967), (371, 54301221), (399, 50490609), (477, 42234283), (507, 39735213), (689, 29239119), (741, 27187251), (819, 24597989), (1007, 20005713), (1113, 18100407), (1183, 17029377), (1197, 16830203), (1521, 13245071), (1729, 11651679), (1879, 10721529), (2067, 9746373), (2223, 9062417), (3021, 6668571), (3211, 6273981), (3339, 6033469), (3549, 5676459), (4823, 4177017), (5187, 3883893), (5637, 3573843), (6201, 3248791), (7049, 2857959), (8957, 2249163), (9063, 2222857), (9633, 2091327), (10647, 1892153), (13091, 1538901), (13153, 1531647), (14469, 1392339), (15561, 1294631), (16911, 1191281), (21147, 952653), (22477, 896283), (24427, 824733), (26871, 749721), (28899, 697109), (35701, 564291), (39273, 512967), (39459, 510549), (43407, 464113), (62699, 321309), (63441, 317551), (67431, 298761), (73281, 274911), (80613, 249907), (91637, 219843), (99587, 202293), (107103, 188097), (117819, 170989), (118377, 170183)]