128317280

素因数分解:

$2^5\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{1259}}^1$

素因数の和:1301

約数の個数: 144

約数和(自身を含む): 380071440

約数和(自身を除く): 251754160

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 16, 20, 26, 28, 32, 35, 40, 49, 52, 56, 65, 70, 80, 91, 98, 104, 112, 130, 140, 160, 182, 196, 208, 224, 245, 260, 280, 364, 392, 416, 455, 490, 520, 560, 637, 728, 784, 910, 980, 1040, 1120, 1259, 1274, 1456, 1568, 1820, 1960, 2080, 2518, 2548, 2912, 3185, 3640, 3920, 5036, 5096, 6295, 6370, 7280, 7840, 8813, 10072, 10192, 12590, 12740, 14560, 16367, 17626, 20144, 20384, 25180, 25480, 32734, 35252, 40288, 44065, 50360, 50960, 61691, 65468, 70504, 81835, 88130, 100720, 101920, 114569, 123382, 130936, 141008, 163670, 176260, 201440, 229138, 246764, 261872, 282016, 308455, 327340, 352520, 458276, 493528, 523744, 572845, 616910, 654680, 705040, 801983, 916552, 987056, 1145690, 1233820, 1309360, 1410080, 1603966, 1833104, 1974112, 2291380, 2467640, 2618720, 3207932, 3666208, 4009915, 4582760, 4935280, 6415864, 8019830, 9165520, 9870560, 12831728, 16039660, 18331040, 25663456, 32079320, 64158640, 128317280]

約数ペア:

[(1, 128317280), (2, 64158640), (4, 32079320), (5, 25663456), (7, 18331040), (8, 16039660), (10, 12831728), (13, 9870560), (14, 9165520), (16, 8019830), (20, 6415864), (26, 4935280), (28, 4582760), (32, 4009915), (35, 3666208), (40, 3207932), (49, 2618720), (52, 2467640), (56, 2291380), (65, 1974112), (70, 1833104), (80, 1603966), (91, 1410080), (98, 1309360), (104, 1233820), (112, 1145690), (130, 987056), (140, 916552), (160, 801983), (182, 705040), (196, 654680), (208, 616910), (224, 572845), (245, 523744), (260, 493528), (280, 458276), (364, 352520), (392, 327340), (416, 308455), (455, 282016), (490, 261872), (520, 246764), (560, 229138), (637, 201440), (728, 176260), (784, 163670), (910, 141008), (980, 130936), (1040, 123382), (1120, 114569), (1259, 101920), (1274, 100720), (1456, 88130), (1568, 81835), (1820, 70504), (1960, 65468), (2080, 61691), (2518, 50960), (2548, 50360), (2912, 44065), (3185, 40288), (3640, 35252), (3920, 32734), (5036, 25480), (5096, 25180), (6295, 20384), (6370, 20144), (7280, 17626), (7840, 16367), (8813, 14560), (10072, 12740), (10192, 12590)]