20613957

素因数分解:

$3^1\times 7^3\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{67}}^1$

素因数の和:127

約数の個数: 64

約数和(自身を含む): 36556800

約数和(自身を除く): 15942843

約数列:

[1, 3, 7, 13, 21, 23, 39, 49, 67, 69, 91, 147, 161, 201, 273, 299, 343, 469, 483, 637, 871, 897, 1029, 1127, 1407, 1541, 1911, 2093, 2613, 3283, 3381, 4459, 4623, 6097, 6279, 7889, 9849, 10787, 13377, 14651, 18291, 20033, 22981, 23667, 32361, 42679, 43953, 60099, 68943, 75509, 102557, 128037, 140231, 226527, 298753, 307671, 420693, 528563, 896259, 981617, 1585689, 2944851, 6871319, 20613957]

約数ペア:

[(1, 20613957), (3, 6871319), (7, 2944851), (13, 1585689), (21, 981617), (23, 896259), (39, 528563), (49, 420693), (67, 307671), (69, 298753), (91, 226527), (147, 140231), (161, 128037), (201, 102557), (273, 75509), (299, 68943), (343, 60099), (469, 43953), (483, 42679), (637, 32361), (871, 23667), (897, 22981), (1029, 20033), (1127, 18291), (1407, 14651), (1541, 13377), (1911, 10787), (2093, 9849), (2613, 7889), (3283, 6279), (3381, 6097), (4459, 4623)]