21712681844

素因数分解:

$2^2\times 7^2\times {\mathrm{61}}^1\times {\mathrm{109}}^1\times {\mathrm{16661}}^1$

素因数の和:16849

約数の個数: 72

約数和(自身を含む): 45340301160

約数和(自身を除く): 23627619316

約数列:

[1, 2, 4, 7, 14, 28, 49, 61, 98, 109, 122, 196, 218, 244, 427, 436, 763, 854, 1526, 1708, 2989, 3052, 5341, 5978, 6649, 10682, 11956, 13298, 16661, 21364, 26596, 33322, 46543, 66644, 93086, 116627, 186172, 233254, 325801, 466508, 651602, 816389, 1016321, 1303204, 1632778, 1816049, 2032642, 3265556, 3632098, 4065284, 7114247, 7264196, 12712343, 14228494, 25424686, 28456988, 49799729, 50849372, 88986401, 99599458, 110778989, 177972802, 199198916, 221557978, 355945604, 443115956, 775452923, 1550905846, 3101811692, 5428170461, 10856340922, 21712681844]

約数ペア:

[(1, 21712681844), (2, 10856340922), (4, 5428170461), (7, 3101811692), (14, 1550905846), (28, 775452923), (49, 443115956), (61, 355945604), (98, 221557978), (109, 199198916), (122, 177972802), (196, 110778989), (218, 99599458), (244, 88986401), (427, 50849372), (436, 49799729), (763, 28456988), (854, 25424686), (1526, 14228494), (1708, 12712343), (2989, 7264196), (3052, 7114247), (5341, 4065284), (5978, 3632098), (6649, 3265556), (10682, 2032642), (11956, 1816049), (13298, 1632778), (16661, 1303204), (21364, 1016321), (26596, 816389), (33322, 651602), (46543, 466508), (66644, 325801), (93086, 233254), (116627, 186172)]