20983144

素因数分解:

$2^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{41}}^1$

素因数の和:123

約数の個数: 128

約数和(自身を含む): 53625600

約数和(自身を除く): 32642456

約数列:

[1, 2, 4, 7, 8, 13, 14, 19, 26, 28, 37, 38, 41, 52, 56, 74, 76, 82, 91, 104, 133, 148, 152, 164, 182, 247, 259, 266, 287, 296, 328, 364, 481, 494, 518, 532, 533, 574, 703, 728, 779, 962, 988, 1036, 1064, 1066, 1148, 1406, 1517, 1558, 1729, 1924, 1976, 2072, 2132, 2296, 2812, 3034, 3116, 3367, 3458, 3731, 3848, 4264, 4921, 5453, 5624, 6068, 6232, 6734, 6916, 7462, 9139, 9842, 10127, 10619, 10906, 12136, 13468, 13832, 14924, 18278, 19684, 19721, 20254, 21238, 21812, 26936, 28823, 29848, 36556, 39368, 39442, 40508, 42476, 43624, 57646, 63973, 70889, 73112, 78884, 81016, 84952, 115292, 127946, 138047, 141778, 157768, 201761, 230584, 255892, 276094, 283556, 374699, 403522, 511784, 552188, 567112, 749398, 807044, 1104376, 1498796, 1614088, 2622893, 2997592, 5245786, 10491572, 20983144]

約数ペア:

[(1, 20983144), (2, 10491572), (4, 5245786), (7, 2997592), (8, 2622893), (13, 1614088), (14, 1498796), (19, 1104376), (26, 807044), (28, 749398), (37, 567112), (38, 552188), (41, 511784), (52, 403522), (56, 374699), (74, 283556), (76, 276094), (82, 255892), (91, 230584), (104, 201761), (133, 157768), (148, 141778), (152, 138047), (164, 127946), (182, 115292), (247, 84952), (259, 81016), (266, 78884), (287, 73112), (296, 70889), (328, 63973), (364, 57646), (481, 43624), (494, 42476), (518, 40508), (532, 39442), (533, 39368), (574, 36556), (703, 29848), (728, 28823), (779, 26936), (962, 21812), (988, 21238), (1036, 20254), (1064, 19721), (1066, 19684), (1148, 18278), (1406, 14924), (1517, 13832), (1558, 13468), (1729, 12136), (1924, 10906), (1976, 10619), (2072, 10127), (2132, 9842), (2296, 9139), (2812, 7462), (3034, 6916), (3116, 6734), (3367, 6232), (3458, 6068), (3731, 5624), (3848, 5453), (4264, 4921)]