256736480

素因数分解:

$2^5\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{229}}^1$

素因数の和:282

約数の個数: 288

約数和(自身を含む): 832537440

約数和(自身を除く): 575800960

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 13, 14, 16, 20, 22, 26, 28, 32, 35, 40, 44, 49, 52, 55, 56, 65, 70, 77, 80, 88, 91, 98, 104, 110, 112, 130, 140, 143, 154, 160, 176, 182, 196, 208, 220, 224, 229, 245, 260, 280, 286, 308, 352, 364, 385, 392, 416, 440, 455, 458, 490, 520, 539, 560, 572, 616, 637, 715, 728, 770, 784, 880, 910, 916, 980, 1001, 1040, 1078, 1120, 1144, 1145, 1232, 1274, 1430, 1456, 1540, 1568, 1603, 1760, 1820, 1832, 1960, 2002, 2080, 2156, 2288, 2290, 2464, 2519, 2548, 2695, 2860, 2912, 2977, 3080, 3185, 3206, 3640, 3664, 3920, 4004, 4312, 4576, 4580, 5005, 5038, 5096, 5390, 5720, 5954, 6160, 6370, 6412, 7007, 7280, 7328, 7840, 8008, 8015, 8624, 9160, 10010, 10076, 10192, 10780, 11221, 11440, 11908, 12320, 12595, 12740, 12824, 14014, 14560, 14885, 16016, 16030, 17248, 17633, 18320, 20020, 20152, 20384, 20839, 21560, 22442, 22880, 23816, 25190, 25480, 25648, 28028, 29770, 32032, 32060, 32747, 35035, 35266, 36640, 40040, 40304, 41678, 43120, 44884, 47632, 50380, 50960, 51296, 56056, 56105, 59540, 64120, 65494, 70070, 70532, 80080, 80608, 83356, 86240, 88165, 89768, 95264, 100760, 101920, 104195, 112112, 112210, 119080, 123431, 128240, 130988, 140140, 141064, 145873, 160160, 163735, 166712, 176330, 179536, 201520, 208390, 224224, 224420, 229229, 238160, 246862, 256480, 261976, 280280, 282128, 291746, 327470, 333424, 352660, 359072, 403040, 416780, 448840, 458458, 476320, 493724, 523952, 560560, 564256, 583492, 617155, 654940, 666848, 705320, 729365, 833560, 897680, 916916, 987448, 1047904, 1121120, 1146145, 1166984, 1234310, 1309880, 1410640, 1458730, 1604603, 1667120, 1795360, 1833832, 1974896, 2292290, 2333968, 2468620, 2619760, 2821280, 2917460, 3209206, 3334240, 3667664, 3949792, 4584580, 4667936, 4937240, 5239520, 5834920, 6418412, 7335328, 8023015, 9169160, 9874480, 11669840, 12836824, 16046030, 18338320, 19748960, 23339680, 25673648, 32092060, 36676640, 51347296, 64184120, 128368240, 256736480]

約数ペア:

[(1, 256736480), (2, 128368240), (4, 64184120), (5, 51347296), (7, 36676640), (8, 32092060), (10, 25673648), (11, 23339680), (13, 19748960), (14, 18338320), (16, 16046030), (20, 12836824), (22, 11669840), (26, 9874480), (28, 9169160), (32, 8023015), (35, 7335328), (40, 6418412), (44, 5834920), (49, 5239520), (52, 4937240), (55, 4667936), (56, 4584580), (65, 3949792), (70, 3667664), (77, 3334240), (80, 3209206), (88, 2917460), (91, 2821280), (98, 2619760), (104, 2468620), (110, 2333968), (112, 2292290), (130, 1974896), (140, 1833832), (143, 1795360), (154, 1667120), (160, 1604603), (176, 1458730), (182, 1410640), (196, 1309880), (208, 1234310), (220, 1166984), (224, 1146145), (229, 1121120), (245, 1047904), (260, 987448), (280, 916916), (286, 897680), (308, 833560), (352, 729365), (364, 705320), (385, 666848), (392, 654940), (416, 617155), (440, 583492), (455, 564256), (458, 560560), (490, 523952), (520, 493724), (539, 476320), (560, 458458), (572, 448840), (616, 416780), (637, 403040), (715, 359072), (728, 352660), (770, 333424), (784, 327470), (880, 291746), (910, 282128), (916, 280280), (980, 261976), (1001, 256480), (1040, 246862), (1078, 238160), (1120, 229229), (1144, 224420), (1145, 224224), (1232, 208390), (1274, 201520), (1430, 179536), (1456, 176330), (1540, 166712), (1568, 163735), (1603, 160160), (1760, 145873), (1820, 141064), (1832, 140140), (1960, 130988), (2002, 128240), (2080, 123431), (2156, 119080), (2288, 112210), (2290, 112112), (2464, 104195), (2519, 101920), (2548, 100760), (2695, 95264), (2860, 89768), (2912, 88165), (2977, 86240), (3080, 83356), (3185, 80608), (3206, 80080), (3640, 70532), (3664, 70070), (3920, 65494), (4004, 64120), (4312, 59540), (4576, 56105), (4580, 56056), (5005, 51296), (5038, 50960), (5096, 50380), (5390, 47632), (5720, 44884), (5954, 43120), (6160, 41678), (6370, 40304), (6412, 40040), (7007, 36640), (7280, 35266), (7328, 35035), (7840, 32747), (8008, 32060), (8015, 32032), (8624, 29770), (9160, 28028), (10010, 25648), (10076, 25480), (10192, 25190), (10780, 23816), (11221, 22880), (11440, 22442), (11908, 21560), (12320, 20839), (12595, 20384), (12740, 20152), (12824, 20020), (14014, 18320), (14560, 17633), (14885, 17248), (16016, 16030)]