19801635840

素因数分解:

$2^{10}\times 3^4\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{359}}^1$

素因数の和:422

約数の個数: 880

約数和(自身を含む): 85600627200

約数和(自身を除く): 65798991360

約数列:

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1432410, 1447488, 1451520, 1473336, 1527904, 1532160, 1550880, 1575936, 1608320, 1628424, 1637040, 1654272, 1718892, 1723680, 1746176, 1809360, 1838080, 1838592, 1841670, 1861056, 1909880, 1929984, 1964448, 1969920, 2035530, 2042880, 2067840, 2148615, 2171232, 2182720, 2210004, 2291856, 2298240, 2326320, 2412480, 2455560, 2481408, 2573312, 2578338, 2619264, 2626560, 2714040, 2757120, 2757888, 2762505, 2864820, 2894976, 2903040, 2946672, 3055808, 3064320, 3101760, 3216640, 3256848, 3274080, 3308544, 3437784, 3447360, 3492352, 3618720, 3677184, 3683340, 3722112, 3819760, 3859968, 3867507, 3928896, 3939840, 4071060, 4135680, 4297230, 4342464, 4365440, 4420008, 4583712, 4596480, 4652640, 4824960, 4911120, 4962816, 5156676, 5238528, 5428080, 5514240, 5515776, 5525010, 5729640, 5789952, 5893344, 6111616, 6128640, 6203520, 6433280, 6445845, 6513696, 6548160, 6875568, 6894720, 6984704, 7237440, 7366680, 7444224, 7639520, 7719936, 7735014, 7857792, 7879680, 8142120, 8271360, 8594460, 8684928, 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約数ペア:

[(1, 19801635840), (2, 9900817920), (3, 6600545280), (4, 4950408960), (5, 3960327168), (6, 3300272640), (7, 2828805120), (8, 2475204480), (9, 2200181760), (10, 1980163584), (12, 1650136320), (14, 1414402560), (15, 1320109056), (16, 1237602240), (18, 1100090880), (19, 1042191360), (20, 990081792), (21, 942935040), (24, 825068160), (27, 733393920), (28, 707201280), (30, 660054528), (32, 618801120), (35, 565761024), (36, 550045440), (38, 521095680), (40, 495040896), (42, 471467520), (45, 440036352), (48, 412534080), (54, 366696960), (56, 353600640), (57, 347397120), (60, 330027264), (63, 314311680), (64, 309400560), (70, 282880512), (72, 275022720), (76, 260547840), (80, 247520448), (81, 244464640), (84, 235733760), (90, 220018176), (95, 208438272), (96, 206267040), (105, 188587008), (108, 183348480), (112, 176800320), (114, 173698560), (120, 165013632), (126, 157155840), (128, 154700280), (133, 148884480), (135, 146678784), (140, 141440256), (144, 137511360), (152, 130273920), (160, 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