81151812

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{997}}^1$

素因数の和:1050

約数の個数: 144

約数和(自身を含む): 261555840

約数和(自身を除く): 180404028

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 17, 18, 19, 21, 28, 34, 36, 38, 42, 51, 57, 63, 68, 76, 84, 102, 114, 119, 126, 133, 153, 171, 204, 228, 238, 252, 266, 306, 323, 342, 357, 399, 476, 532, 612, 646, 684, 714, 798, 969, 997, 1071, 1197, 1292, 1428, 1596, 1938, 1994, 2142, 2261, 2394, 2907, 2991, 3876, 3988, 4284, 4522, 4788, 5814, 5982, 6783, 6979, 8973, 9044, 11628, 11964, 13566, 13958, 16949, 17946, 18943, 20349, 20937, 27132, 27916, 33898, 35892, 37886, 40698, 41874, 50847, 56829, 62811, 67796, 75772, 81396, 83748, 101694, 113658, 118643, 125622, 132601, 152541, 170487, 203388, 227316, 237286, 251244, 265202, 305082, 322031, 340974, 355929, 397803, 474572, 530404, 610164, 644062, 681948, 711858, 795606, 966093, 1067787, 1193409, 1288124, 1423716, 1591212, 1932186, 2135574, 2254217, 2386818, 2898279, 3864372, 4271148, 4508434, 4773636, 5796558, 6762651, 9016868, 11593116, 13525302, 20287953, 27050604, 40575906, 81151812]

約数ペア:

[(1, 81151812), (2, 40575906), (3, 27050604), (4, 20287953), (6, 13525302), (7, 11593116), (9, 9016868), (12, 6762651), (14, 5796558), (17, 4773636), (18, 4508434), (19, 4271148), (21, 3864372), (28, 2898279), (34, 2386818), (36, 2254217), (38, 2135574), (42, 1932186), (51, 1591212), (57, 1423716), (63, 1288124), (68, 1193409), (76, 1067787), (84, 966093), (102, 795606), (114, 711858), (119, 681948), (126, 644062), (133, 610164), (153, 530404), (171, 474572), (204, 397803), (228, 355929), (238, 340974), (252, 322031), (266, 305082), (306, 265202), (323, 251244), (342, 237286), (357, 227316), (399, 203388), (476, 170487), (532, 152541), (612, 132601), (646, 125622), (684, 118643), (714, 113658), (798, 101694), (969, 83748), (997, 81396), (1071, 75772), (1197, 67796), (1292, 62811), (1428, 56829), (1596, 50847), (1938, 41874), (1994, 40698), (2142, 37886), (2261, 35892), (2394, 33898), (2907, 27916), (2991, 27132), (3876, 20937), (3988, 20349), (4284, 18943), (4522, 17946), (4788, 16949), (5814, 13958), (5982, 13566), (6783, 11964), (6979, 11628), (8973, 9044)]