20809614987

素因数分解:

$3^4\times 7^1\times {\mathrm{23}}^1\times {\mathrm{73}}^1\times {\mathrm{21859}}^1$

素因数の和:21974

約数の個数: 80

約数和(自身を含む): 37581012480

約数和(自身を除く): 16771397493

約数列:

[1, 3, 7, 9, 21, 23, 27, 63, 69, 73, 81, 161, 189, 207, 219, 483, 511, 567, 621, 657, 1449, 1533, 1679, 1863, 1971, 4347, 4599, 5037, 5913, 11753, 13041, 13797, 15111, 21859, 35259, 41391, 45333, 65577, 105777, 135999, 153013, 196731, 317331, 459039, 502757, 590193, 951993, 1377117, 1508271, 1595707, 1770579, 3519299, 4131351, 4524813, 4787121, 10557897, 11169949, 12394053, 13574439, 14361363, 31673691, 33509847, 36701261, 40723317, 43084089, 95021073, 100529541, 110103783, 129252267, 256908827, 285063219, 301588623, 330311349, 770726481, 904765869, 990934047, 2312179443, 2972802141, 6936538329, 20809614987]

約数ペア:

[(1, 20809614987), (3, 6936538329), (7, 2972802141), (9, 2312179443), (21, 990934047), (23, 904765869), (27, 770726481), (63, 330311349), (69, 301588623), (73, 285063219), (81, 256908827), (161, 129252267), (189, 110103783), (207, 100529541), (219, 95021073), (483, 43084089), (511, 40723317), (567, 36701261), (621, 33509847), (657, 31673691), (1449, 14361363), (1533, 13574439), (1679, 12394053), (1863, 11169949), (1971, 10557897), (4347, 4787121), (4599, 4524813), (5037, 4131351), (5913, 3519299), (11753, 1770579), (13041, 1595707), (13797, 1508271), (15111, 1377117), (21859, 951993), (35259, 590193), (41391, 502757), (45333, 459039), (65577, 317331), (105777, 196731), (135999, 153013)]