1287904920

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{461}}^1\times {\mathrm{751}}^1$

素因数の和:1257

約数の個数: 128

約数和(自身を含む): 4002324480

約数和(自身を除く): 2714419560

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 31, 40, 60, 62, 93, 120, 124, 155, 186, 248, 310, 372, 461, 465, 620, 744, 751, 922, 930, 1240, 1383, 1502, 1844, 1860, 2253, 2305, 2766, 3004, 3688, 3720, 3755, 4506, 4610, 5532, 6008, 6915, 7510, 9012, 9220, 11064, 11265, 13830, 14291, 15020, 18024, 18440, 22530, 23281, 27660, 28582, 30040, 42873, 45060, 46562, 55320, 57164, 69843, 71455, 85746, 90120, 93124, 114328, 116405, 139686, 142910, 171492, 186248, 214365, 232810, 279372, 285820, 342984, 346211, 349215, 428730, 465620, 558744, 571640, 692422, 698430, 857460, 931240, 1038633, 1384844, 1396860, 1714920, 1731055, 2077266, 2769688, 2793720, 3462110, 4154532, 5193165, 6924220, 8309064, 10386330, 10732541, 13848440, 20772660, 21465082, 32197623, 41545320, 42930164, 53662705, 64395246, 85860328, 107325410, 128790492, 160988115, 214650820, 257580984, 321976230, 429301640, 643952460, 1287904920]

約数ペア:

[(1, 1287904920), (2, 643952460), (3, 429301640), (4, 321976230), (5, 257580984), (6, 214650820), (8, 160988115), (10, 128790492), (12, 107325410), (15, 85860328), (20, 64395246), (24, 53662705), (30, 42930164), (31, 41545320), (40, 32197623), (60, 21465082), (62, 20772660), (93, 13848440), (120, 10732541), (124, 10386330), (155, 8309064), (186, 6924220), (248, 5193165), (310, 4154532), (372, 3462110), (461, 2793720), (465, 2769688), (620, 2077266), (744, 1731055), (751, 1714920), (922, 1396860), (930, 1384844), (1240, 1038633), (1383, 931240), (1502, 857460), (1844, 698430), (1860, 692422), (2253, 571640), (2305, 558744), (2766, 465620), (3004, 428730), (3688, 349215), (3720, 346211), (3755, 342984), (4506, 285820), (4610, 279372), (5532, 232810), (6008, 214365), (6915, 186248), (7510, 171492), (9012, 142910), (9220, 139686), (11064, 116405), (11265, 114328), (13830, 93124), (14291, 90120), (15020, 85746), (18024, 71455), (18440, 69843), (22530, 57164), (23281, 55320), (27660, 46562), (28582, 45060), (30040, 42873)]