257705280

素因数分解:

$2^6\times 3^3\times 5^1\times 7^1\times {\mathrm{4261}}^1$

素因数の和:4294

約数の個数: 224

約数和(自身を含む): 1039246080

約数和(自身を除く): 781540800

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 27, 28, 30, 32, 35, 36, 40, 42, 45, 48, 54, 56, 60, 63, 64, 70, 72, 80, 84, 90, 96, 105, 108, 112, 120, 126, 135, 140, 144, 160, 168, 180, 189, 192, 210, 216, 224, 240, 252, 270, 280, 288, 315, 320, 336, 360, 378, 420, 432, 448, 480, 504, 540, 560, 576, 630, 672, 720, 756, 840, 864, 945, 960, 1008, 1080, 1120, 1260, 1344, 1440, 1512, 1680, 1728, 1890, 2016, 2160, 2240, 2520, 2880, 3024, 3360, 3780, 4032, 4261, 4320, 5040, 6048, 6720, 7560, 8522, 8640, 10080, 12096, 12783, 15120, 17044, 20160, 21305, 25566, 29827, 30240, 34088, 38349, 42610, 51132, 59654, 60480, 63915, 68176, 76698, 85220, 89481, 102264, 115047, 119308, 127830, 136352, 149135, 153396, 170440, 178962, 191745, 204528, 230094, 238616, 255660, 268443, 272704, 298270, 306792, 340880, 357924, 383490, 409056, 447405, 460188, 477232, 511320, 536886, 575235, 596540, 613584, 681760, 715848, 766980, 805329, 818112, 894810, 920376, 954464, 1022640, 1073772, 1150470, 1193080, 1227168, 1342215, 1363520, 1431696, 1533960, 1610658, 1789620, 1840752, 1908928, 2045280, 2147544, 2300940, 2386160, 2454336, 2684430, 2863392, 3067920, 3221316, 3579240, 3681504, 4026645, 4090560, 4295088, 4601880, 4772320, 5368860, 5726784, 6135840, 6442632, 7158480, 7363008, 8053290, 8590176, 9203760, 9544640, 10737720, 12271680, 12885264, 14316960, 16106580, 17180352, 18407520, 21475440, 25770528, 28633920, 32213160, 36815040, 42950880, 51541056, 64426320, 85901760, 128852640, 257705280]

約数ペア:

[(1, 257705280), (2, 128852640), (3, 85901760), (4, 64426320), (5, 51541056), (6, 42950880), (7, 36815040), (8, 32213160), (9, 28633920), (10, 25770528), (12, 21475440), (14, 18407520), (15, 17180352), (16, 16106580), (18, 14316960), (20, 12885264), (21, 12271680), (24, 10737720), (27, 9544640), (28, 9203760), (30, 8590176), (32, 8053290), (35, 7363008), (36, 7158480), (40, 6442632), (42, 6135840), (45, 5726784), (48, 5368860), (54, 4772320), (56, 4601880), (60, 4295088), (63, 4090560), (64, 4026645), (70, 3681504), (72, 3579240), (80, 3221316), (84, 3067920), (90, 2863392), (96, 2684430), (105, 2454336), (108, 2386160), (112, 2300940), (120, 2147544), (126, 2045280), (135, 1908928), (140, 1840752), (144, 1789620), (160, 1610658), (168, 1533960), (180, 1431696), (189, 1363520), (192, 1342215), (210, 1227168), (216, 1193080), (224, 1150470), (240, 1073772), (252, 1022640), (270, 954464), (280, 920376), (288, 894810), (315, 818112), (320, 805329), (336, 766980), (360, 715848), (378, 681760), (420, 613584), (432, 596540), (448, 575235), (480, 536886), (504, 511320), (540, 477232), (560, 460188), (576, 447405), (630, 409056), (672, 383490), (720, 357924), (756, 340880), (840, 306792), (864, 298270), (945, 272704), (960, 268443), (1008, 255660), (1080, 238616), (1120, 230094), (1260, 204528), (1344, 191745), (1440, 178962), (1512, 170440), (1680, 153396), (1728, 149135), (1890, 136352), (2016, 127830), (2160, 119308), (2240, 115047), (2520, 102264), (2880, 89481), (3024, 85220), (3360, 76698), (3780, 68176), (4032, 63915), (4261, 60480), (4320, 59654), (5040, 51132), (6048, 42610), (6720, 38349), (7560, 34088), (8522, 30240), (8640, 29827), (10080, 25566), (12096, 21305), (12783, 20160), (15120, 17044)]