28004886

素因数分解:

$2^1\times 3^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{139}}^1$

素因数の和:211

約数の個数: 128

約数和(自身を含む): 79027200

約数和(自身を除く): 51022314

約数列:

[1, 2, 3, 6, 7, 9, 13, 14, 18, 21, 26, 27, 39, 41, 42, 54, 63, 78, 82, 91, 117, 123, 126, 139, 182, 189, 234, 246, 273, 278, 287, 351, 369, 378, 417, 533, 546, 574, 702, 738, 819, 834, 861, 973, 1066, 1107, 1251, 1599, 1638, 1722, 1807, 1946, 2214, 2457, 2502, 2583, 2919, 3198, 3614, 3731, 3753, 4797, 4914, 5166, 5421, 5699, 5838, 7462, 7506, 7749, 8757, 9594, 10842, 11193, 11398, 12649, 14391, 15498, 16263, 17097, 17514, 22386, 25298, 26271, 28782, 32526, 33579, 34194, 37947, 39893, 48789, 51291, 52542, 67158, 74087, 75894, 79786, 97578, 100737, 102582, 113841, 119679, 148174, 153873, 201474, 222261, 227682, 239358, 307746, 341523, 359037, 444522, 518609, 666783, 683046, 718074, 1037218, 1077111, 1333566, 1555827, 2000349, 2154222, 3111654, 4000698, 4667481, 9334962, 14002443, 28004886]

約数ペア:

[(1, 28004886), (2, 14002443), (3, 9334962), (6, 4667481), (7, 4000698), (9, 3111654), (13, 2154222), (14, 2000349), (18, 1555827), (21, 1333566), (26, 1077111), (27, 1037218), (39, 718074), (41, 683046), (42, 666783), (54, 518609), (63, 444522), (78, 359037), (82, 341523), (91, 307746), (117, 239358), (123, 227682), (126, 222261), (139, 201474), (182, 153873), (189, 148174), (234, 119679), (246, 113841), (273, 102582), (278, 100737), (287, 97578), (351, 79786), (369, 75894), (378, 74087), (417, 67158), (533, 52542), (546, 51291), (574, 48789), (702, 39893), (738, 37947), (819, 34194), (834, 33579), (861, 32526), (973, 28782), (1066, 26271), (1107, 25298), (1251, 22386), (1599, 17514), (1638, 17097), (1722, 16263), (1807, 15498), (1946, 14391), (2214, 12649), (2457, 11398), (2502, 11193), (2583, 10842), (2919, 9594), (3198, 8757), (3614, 7749), (3731, 7506), (3753, 7462), (4797, 5838), (4914, 5699), (5166, 5421)]