256349520

素因数分解:

$2^4\times 3^2\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{2677}}^1$

素因数の和:2722

約数の個数: 240

約数和(自身を含む): 1036064640

約数和(自身を除く): 779715120

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 19, 20, 21, 24, 28, 30, 35, 36, 38, 40, 42, 45, 48, 56, 57, 60, 63, 70, 72, 76, 80, 84, 90, 95, 105, 112, 114, 120, 126, 133, 140, 144, 152, 168, 171, 180, 190, 210, 228, 240, 252, 266, 280, 285, 304, 315, 336, 342, 360, 380, 399, 420, 456, 504, 532, 560, 570, 630, 665, 684, 720, 760, 798, 840, 855, 912, 1008, 1064, 1140, 1197, 1260, 1330, 1368, 1520, 1596, 1680, 1710, 1995, 2128, 2280, 2394, 2520, 2660, 2677, 2736, 3192, 3420, 3990, 4560, 4788, 5040, 5320, 5354, 5985, 6384, 6840, 7980, 8031, 9576, 10640, 10708, 11970, 13385, 13680, 15960, 16062, 18739, 19152, 21416, 23940, 24093, 26770, 31920, 32124, 37478, 40155, 42832, 47880, 48186, 50863, 53540, 56217, 64248, 74956, 80310, 93695, 95760, 96372, 101726, 107080, 112434, 120465, 128496, 149912, 152589, 160620, 168651, 187390, 192744, 203452, 214160, 224868, 240930, 254315, 281085, 299824, 305178, 321240, 337302, 356041, 374780, 385488, 406904, 449736, 457767, 481860, 508630, 562170, 610356, 642480, 674604, 712082, 749560, 762945, 813808, 843255, 899472, 915534, 963720, 1017260, 1068123, 1124340, 1220712, 1349208, 1424164, 1499120, 1525890, 1686510, 1780205, 1831068, 1927440, 2034520, 2136246, 2248680, 2288835, 2441424, 2698416, 2848328, 3051780, 3204369, 3373020, 3560410, 3662136, 4069040, 4272492, 4497360, 4577670, 5340615, 5696656, 6103560, 6408738, 6746040, 7120820, 7324272, 8544984, 9155340, 10681230, 12207120, 12817476, 13492080, 14241640, 16021845, 17089968, 18310680, 21362460, 25634952, 28483280, 32043690, 36621360, 42724920, 51269904, 64087380, 85449840, 128174760, 256349520]

約数ペア:

[(1, 256349520), (2, 128174760), (3, 85449840), (4, 64087380), (5, 51269904), (6, 42724920), (7, 36621360), (8, 32043690), (9, 28483280), (10, 25634952), (12, 21362460), (14, 18310680), (15, 17089968), (16, 16021845), (18, 14241640), (19, 13492080), (20, 12817476), (21, 12207120), (24, 10681230), (28, 9155340), (30, 8544984), (35, 7324272), (36, 7120820), (38, 6746040), (40, 6408738), (42, 6103560), (45, 5696656), (48, 5340615), (56, 4577670), (57, 4497360), (60, 4272492), (63, 4069040), (70, 3662136), (72, 3560410), (76, 3373020), (80, 3204369), (84, 3051780), (90, 2848328), (95, 2698416), (105, 2441424), (112, 2288835), (114, 2248680), (120, 2136246), (126, 2034520), (133, 1927440), (140, 1831068), (144, 1780205), (152, 1686510), (168, 1525890), (171, 1499120), (180, 1424164), (190, 1349208), (210, 1220712), (228, 1124340), (240, 1068123), (252, 1017260), (266, 963720), (280, 915534), (285, 899472), (304, 843255), (315, 813808), (336, 762945), (342, 749560), (360, 712082), (380, 674604), (399, 642480), (420, 610356), (456, 562170), (504, 508630), (532, 481860), (560, 457767), (570, 449736), (630, 406904), (665, 385488), (684, 374780), (720, 356041), (760, 337302), (798, 321240), (840, 305178), (855, 299824), (912, 281085), (1008, 254315), (1064, 240930), (1140, 224868), (1197, 214160), (1260, 203452), (1330, 192744), (1368, 187390), (1520, 168651), (1596, 160620), (1680, 152589), (1710, 149912), (1995, 128496), (2128, 120465), (2280, 112434), (2394, 107080), (2520, 101726), (2660, 96372), (2677, 95760), (2736, 93695), (3192, 80310), (3420, 74956), (3990, 64248), (4560, 56217), (4788, 53540), (5040, 50863), (5320, 48186), (5354, 47880), (5985, 42832), (6384, 40155), (6840, 37478), (7980, 32124), (8031, 31920), (9576, 26770), (10640, 24093), (10708, 23940), (11970, 21416), (13385, 19152), (13680, 18739), (15960, 16062)]