257430720

素因数分解:

$2^6\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{89}}^1\times {\mathrm{131}}^1$

素因数の和:263

約数の個数: 224

約数和(自身を含む): 869045760

約数和(自身を除く): 611615040

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 23, 24, 30, 32, 40, 46, 48, 60, 64, 69, 80, 89, 92, 96, 115, 120, 131, 138, 160, 178, 184, 192, 230, 240, 262, 267, 276, 320, 345, 356, 368, 393, 445, 460, 480, 524, 534, 552, 655, 690, 712, 736, 786, 890, 920, 960, 1048, 1068, 1104, 1310, 1335, 1380, 1424, 1472, 1572, 1780, 1840, 1965, 2047, 2096, 2136, 2208, 2620, 2670, 2760, 2848, 3013, 3144, 3560, 3680, 3930, 4094, 4192, 4272, 4416, 5240, 5340, 5520, 5696, 6026, 6141, 6288, 7120, 7360, 7860, 8188, 8384, 8544, 9039, 10235, 10480, 10680, 11040, 11659, 12052, 12282, 12576, 14240, 15065, 15720, 16376, 17088, 18078, 20470, 20960, 21360, 22080, 23318, 24104, 24564, 25152, 28480, 30130, 30705, 31440, 32752, 34977, 36156, 40940, 41920, 42720, 45195, 46636, 48208, 49128, 58295, 60260, 61410, 62880, 65504, 69954, 72312, 81880, 85440, 90390, 93272, 96416, 98256, 116590, 120520, 122820, 125760, 131008, 139908, 144624, 163760, 174885, 180780, 186544, 192832, 196512, 233180, 241040, 245640, 268157, 279816, 289248, 327520, 349770, 361560, 373088, 393024, 466360, 482080, 491280, 536314, 559632, 578496, 655040, 699540, 723120, 746176, 804471, 932720, 964160, 982560, 1072628, 1119264, 1340785, 1399080, 1446240, 1608942, 1865440, 1965120, 2145256, 2238528, 2681570, 2798160, 2892480, 3217884, 3730880, 4022355, 4290512, 5363140, 5596320, 6435768, 8044710, 8581024, 10726280, 11192640, 12871536, 16089420, 17162048, 21452560, 25743072, 32178840, 42905120, 51486144, 64357680, 85810240, 128715360, 257430720]

約数ペア:

[(1, 257430720), (2, 128715360), (3, 85810240), (4, 64357680), (5, 51486144), (6, 42905120), (8, 32178840), (10, 25743072), (12, 21452560), (15, 17162048), (16, 16089420), (20, 12871536), (23, 11192640), (24, 10726280), (30, 8581024), (32, 8044710), (40, 6435768), (46, 5596320), (48, 5363140), (60, 4290512), (64, 4022355), (69, 3730880), (80, 3217884), (89, 2892480), (92, 2798160), (96, 2681570), (115, 2238528), (120, 2145256), (131, 1965120), (138, 1865440), (160, 1608942), (178, 1446240), (184, 1399080), (192, 1340785), (230, 1119264), (240, 1072628), (262, 982560), (267, 964160), (276, 932720), (320, 804471), (345, 746176), (356, 723120), (368, 699540), (393, 655040), (445, 578496), (460, 559632), (480, 536314), (524, 491280), (534, 482080), (552, 466360), (655, 393024), (690, 373088), (712, 361560), (736, 349770), (786, 327520), (890, 289248), (920, 279816), (960, 268157), (1048, 245640), (1068, 241040), (1104, 233180), (1310, 196512), (1335, 192832), (1380, 186544), (1424, 180780), (1472, 174885), (1572, 163760), (1780, 144624), (1840, 139908), (1965, 131008), (2047, 125760), (2096, 122820), (2136, 120520), (2208, 116590), (2620, 98256), (2670, 96416), (2760, 93272), (2848, 90390), (3013, 85440), (3144, 81880), (3560, 72312), (3680, 69954), (3930, 65504), (4094, 62880), (4192, 61410), (4272, 60260), (4416, 58295), (5240, 49128), (5340, 48208), (5520, 46636), (5696, 45195), (6026, 42720), (6141, 41920), (6288, 40940), (7120, 36156), (7360, 34977), (7860, 32752), (8188, 31440), (8384, 30705), (8544, 30130), (9039, 28480), (10235, 25152), (10480, 24564), (10680, 24104), (11040, 23318), (11659, 22080), (12052, 21360), (12282, 20960), (12576, 20470), (14240, 18078), (15065, 17088), (15720, 16376)]