21749288

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{59}}^2\times {\mathrm{71}}^1$

素因数の和:206

約数の個数: 48

約数和(自身を含む): 45891360

約数和(自身を除く): 24142072

約数列:

[1, 2, 4, 8, 11, 22, 44, 59, 71, 88, 118, 142, 236, 284, 472, 568, 649, 781, 1298, 1562, 2596, 3124, 3481, 4189, 5192, 6248, 6962, 8378, 13924, 16756, 27848, 33512, 38291, 46079, 76582, 92158, 153164, 184316, 247151, 306328, 368632, 494302, 988604, 1977208, 2718661, 5437322, 10874644, 21749288]

約数ペア:

[(1, 21749288), (2, 10874644), (4, 5437322), (8, 2718661), (11, 1977208), (22, 988604), (44, 494302), (59, 368632), (71, 306328), (88, 247151), (118, 184316), (142, 153164), (236, 92158), (284, 76582), (472, 46079), (568, 38291), (649, 33512), (781, 27848), (1298, 16756), (1562, 13924), (2596, 8378), (3124, 6962), (3481, 6248), (4189, 5192)]