21284694

素因数分解:

$2^1\times 3^4\times {\mathrm{37}}^1\times {\mathrm{53}}^1\times {\mathrm{67}}^1$

素因数の和:171

約数の個数: 80

約数和(自身を含む): 50651568

約数和(自身を除く): 29366874

約数列:

[1, 2, 3, 6, 9, 18, 27, 37, 53, 54, 67, 74, 81, 106, 111, 134, 159, 162, 201, 222, 318, 333, 402, 477, 603, 666, 954, 999, 1206, 1431, 1809, 1961, 1998, 2479, 2862, 2997, 3551, 3618, 3922, 4293, 4958, 5427, 5883, 5994, 7102, 7437, 8586, 10653, 10854, 11766, 14874, 17649, 21306, 22311, 31959, 35298, 44622, 52947, 63918, 66933, 95877, 105894, 131387, 133866, 158841, 191754, 200799, 262774, 287631, 317682, 394161, 401598, 575262, 788322, 1182483, 2364966, 3547449, 7094898, 10642347, 21284694]

約数ペア:

[(1, 21284694), (2, 10642347), (3, 7094898), (6, 3547449), (9, 2364966), (18, 1182483), (27, 788322), (37, 575262), (53, 401598), (54, 394161), (67, 317682), (74, 287631), (81, 262774), (106, 200799), (111, 191754), (134, 158841), (159, 133866), (162, 131387), (201, 105894), (222, 95877), (318, 66933), (333, 63918), (402, 52947), (477, 44622), (603, 35298), (666, 31959), (954, 22311), (999, 21306), (1206, 17649), (1431, 14874), (1809, 11766), (1961, 10854), (1998, 10653), (2479, 8586), (2862, 7437), (2997, 7102), (3551, 5994), (3618, 5883), (3922, 5427), (4293, 4958)]