20161718108

素因数分解:

$2^2\times 7^1\times {\mathrm{97}}^2\times {\mathrm{103}}^1\times {\mathrm{743}}^1$

素因数の和:1051

約数の個数: 72

約数和(自身を含む): 41194363392

約数和(自身を除く): 21032645284

約数列:

[1, 2, 4, 7, 14, 28, 97, 103, 194, 206, 388, 412, 679, 721, 743, 1358, 1442, 1486, 2716, 2884, 2972, 5201, 9409, 9991, 10402, 18818, 19982, 20804, 37636, 39964, 65863, 69937, 72071, 76529, 131726, 139874, 144142, 153058, 263452, 279748, 288284, 306116, 504497, 535703, 969127, 1008994, 1071406, 1938254, 2017988, 2142812, 3876508, 6783889, 6990887, 7423313, 13567778, 13981774, 14846626, 27135556, 27963548, 29693252, 48936209, 51963191, 97872418, 103926382, 195744836, 207852764, 720061361, 1440122722, 2880245444, 5040429527, 10080859054, 20161718108]

約数ペア:

[(1, 20161718108), (2, 10080859054), (4, 5040429527), (7, 2880245444), (14, 1440122722), (28, 720061361), (97, 207852764), (103, 195744836), (194, 103926382), (206, 97872418), (388, 51963191), (412, 48936209), (679, 29693252), (721, 27963548), (743, 27135556), (1358, 14846626), (1442, 13981774), (1486, 13567778), (2716, 7423313), (2884, 6990887), (2972, 6783889), (5201, 3876508), (9409, 2142812), (9991, 2017988), (10402, 1938254), (18818, 1071406), (19982, 1008994), (20804, 969127), (37636, 535703), (39964, 504497), (65863, 306116), (69937, 288284), (72071, 279748), (76529, 263452), (131726, 153058), (139874, 144142)]