648936720

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{149}}^1\times {\mathrm{263}}^1$

素因数の和:454

約数の個数: 240

約数和(自身を含む): 2298067200

約数和(自身を除く): 1649130480

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 23, 24, 30, 36, 40, 45, 46, 48, 60, 69, 72, 80, 90, 92, 115, 120, 138, 144, 149, 180, 184, 207, 230, 240, 263, 276, 298, 345, 360, 368, 414, 447, 460, 526, 552, 596, 690, 720, 745, 789, 828, 894, 920, 1035, 1052, 1104, 1192, 1315, 1341, 1380, 1490, 1578, 1656, 1788, 1840, 2070, 2104, 2235, 2367, 2384, 2630, 2682, 2760, 2980, 3156, 3312, 3427, 3576, 3945, 4140, 4208, 4470, 4734, 5260, 5364, 5520, 5960, 6049, 6312, 6705, 6854, 7152, 7890, 8280, 8940, 9468, 10281, 10520, 10728, 11835, 11920, 12098, 12624, 13410, 13708, 15780, 16560, 17135, 17880, 18147, 18936, 20562, 21040, 21456, 23670, 24196, 26820, 27416, 30245, 30843, 31560, 34270, 35760, 36294, 37872, 39187, 41124, 47340, 48392, 51405, 53640, 54441, 54832, 60490, 61686, 63120, 68540, 72588, 78374, 82248, 90735, 94680, 96784, 102810, 107280, 108882, 117561, 120980, 123372, 137080, 145176, 154215, 156748, 164496, 181470, 189360, 195935, 205620, 217764, 235122, 241960, 246744, 272205, 274160, 290352, 308430, 313496, 352683, 362940, 391870, 411240, 435528, 470244, 483920, 493488, 544410, 587805, 616860, 626992, 705366, 725880, 783740, 822480, 871056, 901301, 940488, 1088820, 1175610, 1233720, 1410732, 1451760, 1567480, 1763415, 1802602, 1880976, 2177640, 2351220, 2467440, 2703903, 2821464, 3134960, 3526830, 3605204, 4355280, 4506505, 4702440, 5407806, 5642928, 7053660, 7210408, 8111709, 9013010, 9404880, 10815612, 13519515, 14107320, 14420816, 16223418, 18026020, 21631224, 27039030, 28214640, 32446836, 36052040, 40558545, 43262448, 54078060, 64893672, 72104080, 81117090, 108156120, 129787344, 162234180, 216312240, 324468360, 648936720]

約数ペア:

[(1, 648936720), (2, 324468360), (3, 216312240), (4, 162234180), (5, 129787344), (6, 108156120), (8, 81117090), (9, 72104080), (10, 64893672), (12, 54078060), (15, 43262448), (16, 40558545), (18, 36052040), (20, 32446836), (23, 28214640), (24, 27039030), (30, 21631224), (36, 18026020), (40, 16223418), (45, 14420816), (46, 14107320), (48, 13519515), (60, 10815612), (69, 9404880), (72, 9013010), (80, 8111709), (90, 7210408), (92, 7053660), (115, 5642928), (120, 5407806), (138, 4702440), (144, 4506505), (149, 4355280), (180, 3605204), (184, 3526830), (207, 3134960), (230, 2821464), (240, 2703903), (263, 2467440), (276, 2351220), (298, 2177640), (345, 1880976), (360, 1802602), (368, 1763415), (414, 1567480), (447, 1451760), (460, 1410732), (526, 1233720), (552, 1175610), (596, 1088820), (690, 940488), (720, 901301), (745, 871056), (789, 822480), (828, 783740), (894, 725880), (920, 705366), (1035, 626992), (1052, 616860), (1104, 587805), (1192, 544410), (1315, 493488), (1341, 483920), (1380, 470244), (1490, 435528), (1578, 411240), (1656, 391870), (1788, 362940), (1840, 352683), (2070, 313496), (2104, 308430), (2235, 290352), (2367, 274160), (2384, 272205), (2630, 246744), (2682, 241960), (2760, 235122), (2980, 217764), (3156, 205620), (3312, 195935), (3427, 189360), (3576, 181470), (3945, 164496), (4140, 156748), (4208, 154215), (4470, 145176), (4734, 137080), (5260, 123372), (5364, 120980), (5520, 117561), (5960, 108882), (6049, 107280), (6312, 102810), (6705, 96784), (6854, 94680), (7152, 90735), (7890, 82248), (8280, 78374), (8940, 72588), (9468, 68540), (10281, 63120), (10520, 61686), (10728, 60490), (11835, 54832), (11920, 54441), (12098, 53640), (12624, 51405), (13410, 48392), (13708, 47340), (15780, 41124), (16560, 39187), (17135, 37872), (17880, 36294), (18147, 35760), (18936, 34270), (20562, 31560), (21040, 30843), (21456, 30245), (23670, 27416), (24196, 26820)]