81739560

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{73}}^1$

素因数の和:168

約数の個数: 256

約数和(自身を含む): 300072960

約数和(自身を除く): 218333400

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 31, 35, 40, 42, 43, 56, 60, 62, 70, 73, 84, 86, 93, 105, 120, 124, 129, 140, 146, 155, 168, 172, 186, 210, 215, 217, 219, 248, 258, 280, 292, 301, 310, 344, 365, 372, 420, 430, 434, 438, 465, 511, 516, 584, 602, 620, 645, 651, 730, 744, 840, 860, 868, 876, 903, 930, 1022, 1032, 1085, 1095, 1204, 1240, 1290, 1302, 1333, 1460, 1505, 1533, 1720, 1736, 1752, 1806, 1860, 2044, 2170, 2190, 2263, 2408, 2555, 2580, 2604, 2666, 2920, 3010, 3066, 3139, 3255, 3612, 3720, 3999, 4088, 4340, 4380, 4515, 4526, 5110, 5160, 5208, 5332, 6020, 6132, 6278, 6510, 6665, 6789, 7224, 7665, 7998, 8680, 8760, 9030, 9052, 9331, 9417, 10220, 10664, 11315, 12040, 12264, 12556, 13020, 13330, 13578, 15330, 15695, 15841, 15996, 18060, 18104, 18662, 18834, 19995, 20440, 21973, 22630, 25112, 26040, 26660, 27156, 27993, 30660, 31390, 31682, 31992, 33945, 36120, 37324, 37668, 39990, 43946, 45260, 46655, 47085, 47523, 53320, 54312, 55986, 61320, 62780, 63364, 65919, 67890, 74648, 75336, 79205, 79980, 87892, 90520, 93310, 94170, 95046, 97309, 109865, 111972, 125560, 126728, 131838, 135780, 139965, 158410, 159960, 175784, 186620, 188340, 190092, 194618, 219730, 223944, 237615, 263676, 271560, 279930, 291927, 316820, 329595, 373240, 376680, 380184, 389236, 439460, 475230, 486545, 527352, 559860, 583854, 633640, 659190, 681163, 778472, 878920, 950460, 973090, 1119720, 1167708, 1318380, 1362326, 1459635, 1900920, 1946180, 2043489, 2335416, 2636760, 2724652, 2919270, 3405815, 3892360, 4086978, 5449304, 5838540, 6811630, 8173956, 10217445, 11677080, 13623260, 16347912, 20434890, 27246520, 40869780, 81739560]

約数ペア:

[(1, 81739560), (2, 40869780), (3, 27246520), (4, 20434890), (5, 16347912), (6, 13623260), (7, 11677080), (8, 10217445), (10, 8173956), (12, 6811630), (14, 5838540), (15, 5449304), (20, 4086978), (21, 3892360), (24, 3405815), (28, 2919270), (30, 2724652), (31, 2636760), (35, 2335416), (40, 2043489), (42, 1946180), (43, 1900920), (56, 1459635), (60, 1362326), (62, 1318380), (70, 1167708), (73, 1119720), (84, 973090), (86, 950460), (93, 878920), (105, 778472), (120, 681163), (124, 659190), (129, 633640), (140, 583854), (146, 559860), (155, 527352), (168, 486545), (172, 475230), (186, 439460), (210, 389236), (215, 380184), (217, 376680), (219, 373240), (248, 329595), (258, 316820), (280, 291927), (292, 279930), (301, 271560), (310, 263676), (344, 237615), (365, 223944), (372, 219730), (420, 194618), (430, 190092), (434, 188340), (438, 186620), (465, 175784), (511, 159960), (516, 158410), (584, 139965), (602, 135780), (620, 131838), (645, 126728), (651, 125560), (730, 111972), (744, 109865), (840, 97309), (860, 95046), (868, 94170), (876, 93310), (903, 90520), (930, 87892), (1022, 79980), (1032, 79205), (1085, 75336), (1095, 74648), (1204, 67890), (1240, 65919), (1290, 63364), (1302, 62780), (1333, 61320), (1460, 55986), (1505, 54312), (1533, 53320), (1720, 47523), (1736, 47085), (1752, 46655), (1806, 45260), (1860, 43946), (2044, 39990), (2170, 37668), (2190, 37324), (2263, 36120), (2408, 33945), (2555, 31992), (2580, 31682), (2604, 31390), (2666, 30660), (2920, 27993), (3010, 27156), (3066, 26660), (3139, 26040), (3255, 25112), (3612, 22630), (3720, 21973), (3999, 20440), (4088, 19995), (4340, 18834), (4380, 18662), (4515, 18104), (4526, 18060), (5110, 15996), (5160, 15841), (5208, 15695), (5332, 15330), (6020, 13578), (6132, 13330), (6278, 13020), (6510, 12556), (6665, 12264), (6789, 12040), (7224, 11315), (7665, 10664), (7998, 10220), (8680, 9417), (8760, 9331), (9030, 9052)]