20720238

素因数分解:

$2^1\times 3^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{149}}^1$

素因数の和:222

約数の個数: 96

約数和(自身を含む): 54172800

約数和(自身を除く): 33452562

約数列:

[1, 2, 3, 6, 7, 11, 14, 21, 22, 33, 42, 43, 49, 66, 77, 86, 98, 129, 147, 149, 154, 231, 258, 294, 298, 301, 447, 462, 473, 539, 602, 894, 903, 946, 1043, 1078, 1419, 1617, 1639, 1806, 2086, 2107, 2838, 3129, 3234, 3278, 3311, 4214, 4917, 6258, 6321, 6407, 6622, 7301, 9834, 9933, 11473, 12642, 12814, 14602, 19221, 19866, 21903, 22946, 23177, 34419, 38442, 43806, 44849, 46354, 68838, 69531, 70477, 80311, 89698, 134547, 139062, 140954, 160622, 211431, 240933, 269094, 313943, 422862, 481866, 493339, 627886, 941829, 986678, 1480017, 1883658, 2960034, 3453373, 6906746, 10360119, 20720238]

約数ペア:

[(1, 20720238), (2, 10360119), (3, 6906746), (6, 3453373), (7, 2960034), (11, 1883658), (14, 1480017), (21, 986678), (22, 941829), (33, 627886), (42, 493339), (43, 481866), (49, 422862), (66, 313943), (77, 269094), (86, 240933), (98, 211431), (129, 160622), (147, 140954), (149, 139062), (154, 134547), (231, 89698), (258, 80311), (294, 70477), (298, 69531), (301, 68838), (447, 46354), (462, 44849), (473, 43806), (539, 38442), (602, 34419), (894, 23177), (903, 22946), (946, 21903), (1043, 19866), (1078, 19221), (1419, 14602), (1617, 12814), (1639, 12642), (1806, 11473), (2086, 9933), (2107, 9834), (2838, 7301), (3129, 6622), (3234, 6407), (3278, 6321), (3311, 6258), (4214, 4917)]