20513724

素因数分解:

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

素因数の和:323

約数の個数: 72

約数和(自身を含む): 60079488

約数和(自身を除く): 39565764

約数列:

[1, 2, 3, 4, 6, 7, 11, 12, 14, 21, 22, 28, 33, 42, 44, 66, 77, 84, 132, 149, 154, 231, 298, 308, 447, 462, 596, 894, 924, 1043, 1639, 1788, 2086, 3129, 3278, 4172, 4917, 6258, 6556, 9834, 11473, 12516, 19668, 22201, 22946, 34419, 44402, 45892, 66603, 68838, 88804, 133206, 137676, 155407, 244211, 266412, 310814, 466221, 488422, 621628, 732633, 932442, 976844, 1465266, 1709477, 1864884, 2930532, 3418954, 5128431, 6837908, 10256862, 20513724]

約数ペア:

[(1, 20513724), (2, 10256862), (3, 6837908), (4, 5128431), (6, 3418954), (7, 2930532), (11, 1864884), (12, 1709477), (14, 1465266), (21, 976844), (22, 932442), (28, 732633), (33, 621628), (42, 488422), (44, 466221), (66, 310814), (77, 266412), (84, 244211), (132, 155407), (149, 137676), (154, 133206), (231, 88804), (298, 68838), (308, 66603), (447, 45892), (462, 44402), (596, 34419), (894, 22946), (924, 22201), (1043, 19668), (1639, 12516), (1788, 11473), (2086, 9834), (3129, 6556), (3278, 6258), (4172, 4917)]