256248720

素因数分解:

$2^4\times 3^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{3911}}^1$

素因数の和:3950

約数の個数: 240

約数和(自身を含む): 1059432192

約数和(自身を除く): 803183472

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 13, 14, 15, 16, 18, 20, 21, 24, 26, 28, 30, 35, 36, 39, 40, 42, 45, 48, 52, 56, 60, 63, 65, 70, 72, 78, 80, 84, 90, 91, 104, 105, 112, 117, 120, 126, 130, 140, 144, 156, 168, 180, 182, 195, 208, 210, 234, 240, 252, 260, 273, 280, 312, 315, 336, 360, 364, 390, 420, 455, 468, 504, 520, 546, 560, 585, 624, 630, 720, 728, 780, 819, 840, 910, 936, 1008, 1040, 1092, 1170, 1260, 1365, 1456, 1560, 1638, 1680, 1820, 1872, 2184, 2340, 2520, 2730, 3120, 3276, 3640, 3911, 4095, 4368, 4680, 5040, 5460, 6552, 7280, 7822, 8190, 9360, 10920, 11733, 13104, 15644, 16380, 19555, 21840, 23466, 27377, 31288, 32760, 35199, 39110, 46932, 50843, 54754, 58665, 62576, 65520, 70398, 78220, 82131, 93864, 101686, 109508, 117330, 136885, 140796, 152529, 156440, 164262, 175995, 187728, 203372, 219016, 234660, 246393, 254215, 273770, 281592, 305058, 312880, 328524, 351990, 355901, 406744, 410655, 438032, 457587, 469320, 492786, 508430, 547540, 563184, 610116, 657048, 703980, 711802, 762645, 813488, 821310, 915174, 938640, 985572, 1016860, 1067703, 1095080, 1220232, 1231965, 1314096, 1407960, 1423604, 1525290, 1642620, 1779505, 1830348, 1971144, 2033720, 2135406, 2190160, 2287935, 2440464, 2463930, 2815920, 2847208, 3050580, 3203109, 3285240, 3559010, 3660696, 3942288, 4067440, 4270812, 4575870, 4927860, 5338515, 5694416, 6101160, 6406218, 6570480, 7118020, 7321392, 8541624, 9151740, 9855720, 10677030, 12202320, 12812436, 14236040, 16015545, 17083248, 18303480, 19711440, 21354060, 25624872, 28472080, 32031090, 36606960, 42708120, 51249744, 64062180, 85416240, 128124360, 256248720]

約数ペア:

[(1, 256248720), (2, 128124360), (3, 85416240), (4, 64062180), (5, 51249744), (6, 42708120), (7, 36606960), (8, 32031090), (9, 28472080), (10, 25624872), (12, 21354060), (13, 19711440), (14, 18303480), (15, 17083248), (16, 16015545), (18, 14236040), (20, 12812436), (21, 12202320), (24, 10677030), (26, 9855720), (28, 9151740), (30, 8541624), (35, 7321392), (36, 7118020), (39, 6570480), (40, 6406218), (42, 6101160), (45, 5694416), (48, 5338515), (52, 4927860), (56, 4575870), (60, 4270812), (63, 4067440), (65, 3942288), (70, 3660696), (72, 3559010), (78, 3285240), (80, 3203109), (84, 3050580), (90, 2847208), (91, 2815920), (104, 2463930), (105, 2440464), (112, 2287935), (117, 2190160), (120, 2135406), (126, 2033720), (130, 1971144), (140, 1830348), (144, 1779505), (156, 1642620), (168, 1525290), (180, 1423604), (182, 1407960), (195, 1314096), (208, 1231965), (210, 1220232), (234, 1095080), (240, 1067703), (252, 1016860), (260, 985572), (273, 938640), (280, 915174), (312, 821310), (315, 813488), (336, 762645), (360, 711802), (364, 703980), (390, 657048), (420, 610116), (455, 563184), (468, 547540), (504, 508430), (520, 492786), (546, 469320), (560, 457587), (585, 438032), (624, 410655), (630, 406744), (720, 355901), (728, 351990), (780, 328524), (819, 312880), (840, 305058), (910, 281592), (936, 273770), (1008, 254215), (1040, 246393), (1092, 234660), (1170, 219016), (1260, 203372), (1365, 187728), (1456, 175995), (1560, 164262), (1638, 156440), (1680, 152529), (1820, 140796), (1872, 136885), (2184, 117330), (2340, 109508), (2520, 101686), (2730, 93864), (3120, 82131), (3276, 78220), (3640, 70398), (3911, 65520), (4095, 62576), (4368, 58665), (4680, 54754), (5040, 50843), (5460, 46932), (6552, 39110), (7280, 35199), (7822, 32760), (8190, 31288), (9360, 27377), (10920, 23466), (11733, 21840), (13104, 19555), (15644, 16380)]