19919856

素因数分解:

$2^4\times 3^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{1217}}^1$

素因数の和:1270

約数の個数: 80

約数和(自身を含む): 57996288

約数和(自身を除く): 38076432

約数列:

[1, 2, 3, 4, 6, 8, 11, 12, 16, 22, 24, 31, 33, 44, 48, 62, 66, 88, 93, 124, 132, 176, 186, 248, 264, 341, 372, 496, 528, 682, 744, 1023, 1217, 1364, 1488, 2046, 2434, 2728, 3651, 4092, 4868, 5456, 7302, 8184, 9736, 13387, 14604, 16368, 19472, 26774, 29208, 37727, 40161, 53548, 58416, 75454, 80322, 107096, 113181, 150908, 160644, 214192, 226362, 301816, 321288, 414997, 452724, 603632, 642576, 829994, 905448, 1244991, 1659988, 1810896, 2489982, 3319976, 4979964, 6639952, 9959928, 19919856]

約数ペア:

[(1, 19919856), (2, 9959928), (3, 6639952), (4, 4979964), (6, 3319976), (8, 2489982), (11, 1810896), (12, 1659988), (16, 1244991), (22, 905448), (24, 829994), (31, 642576), (33, 603632), (44, 452724), (48, 414997), (62, 321288), (66, 301816), (88, 226362), (93, 214192), (124, 160644), (132, 150908), (176, 113181), (186, 107096), (248, 80322), (264, 75454), (341, 58416), (372, 53548), (496, 40161), (528, 37727), (682, 29208), (744, 26774), (1023, 19472), (1217, 16368), (1364, 14604), (1488, 13387), (2046, 9736), (2434, 8184), (2728, 7302), (3651, 5456), (4092, 4868)]