28279440

素因数分解:

$2^4\times 3^2\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{181}}^1$

素因数の和:238

約数の個数: 240

約数和(自身を含む): 112659456

約数和(自身を除く): 84380016

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 28, 30, 31, 35, 36, 40, 42, 45, 48, 56, 60, 62, 63, 70, 72, 80, 84, 90, 93, 105, 112, 120, 124, 126, 140, 144, 155, 168, 180, 181, 186, 210, 217, 240, 248, 252, 279, 280, 310, 315, 336, 360, 362, 372, 420, 434, 465, 496, 504, 543, 558, 560, 620, 630, 651, 720, 724, 744, 840, 868, 905, 930, 1008, 1085, 1086, 1116, 1240, 1260, 1267, 1302, 1395, 1448, 1488, 1629, 1680, 1736, 1810, 1860, 1953, 2170, 2172, 2232, 2480, 2520, 2534, 2604, 2715, 2790, 2896, 3255, 3258, 3472, 3620, 3720, 3801, 3906, 4340, 4344, 4464, 5040, 5068, 5208, 5430, 5580, 5611, 6335, 6510, 6516, 7240, 7440, 7602, 7812, 8145, 8680, 8688, 9765, 10136, 10416, 10860, 11160, 11222, 11403, 12670, 13020, 13032, 14480, 15204, 15624, 16290, 16833, 17360, 19005, 19530, 20272, 21720, 22320, 22444, 22806, 25340, 26040, 26064, 28055, 30408, 31248, 32580, 33666, 38010, 39060, 39277, 43440, 44888, 45612, 50499, 50680, 52080, 56110, 57015, 60816, 65160, 67332, 76020, 78120, 78554, 84165, 89776, 91224, 100998, 101360, 112220, 114030, 117831, 130320, 134664, 152040, 156240, 157108, 168330, 182448, 196385, 201996, 224440, 228060, 235662, 252495, 269328, 304080, 314216, 336660, 353493, 392770, 403992, 448880, 456120, 471324, 504990, 589155, 628432, 673320, 706986, 785540, 807984, 912240, 942648, 1009980, 1178310, 1346640, 1413972, 1571080, 1767465, 1885296, 2019960, 2356620, 2827944, 3142160, 3534930, 4039920, 4713240, 5655888, 7069860, 9426480, 14139720, 28279440]

約数ペア:

[(1, 28279440), (2, 14139720), (3, 9426480), (4, 7069860), (5, 5655888), (6, 4713240), (7, 4039920), (8, 3534930), (9, 3142160), (10, 2827944), (12, 2356620), (14, 2019960), (15, 1885296), (16, 1767465), (18, 1571080), (20, 1413972), (21, 1346640), (24, 1178310), (28, 1009980), (30, 942648), (31, 912240), (35, 807984), (36, 785540), (40, 706986), (42, 673320), (45, 628432), (48, 589155), (56, 504990), (60, 471324), (62, 456120), (63, 448880), (70, 403992), (72, 392770), (80, 353493), (84, 336660), (90, 314216), (93, 304080), (105, 269328), (112, 252495), (120, 235662), (124, 228060), (126, 224440), (140, 201996), (144, 196385), (155, 182448), (168, 168330), (180, 157108), (181, 156240), (186, 152040), (210, 134664), (217, 130320), (240, 117831), (248, 114030), (252, 112220), (279, 101360), (280, 100998), (310, 91224), (315, 89776), (336, 84165), (360, 78554), (362, 78120), (372, 76020), (420, 67332), (434, 65160), (465, 60816), (496, 57015), (504, 56110), (543, 52080), (558, 50680), (560, 50499), (620, 45612), (630, 44888), (651, 43440), (720, 39277), (724, 39060), (744, 38010), (840, 33666), (868, 32580), (905, 31248), (930, 30408), (1008, 28055), (1085, 26064), (1086, 26040), (1116, 25340), (1240, 22806), (1260, 22444), (1267, 22320), (1302, 21720), (1395, 20272), (1448, 19530), (1488, 19005), (1629, 17360), (1680, 16833), (1736, 16290), (1810, 15624), (1860, 15204), (1953, 14480), (2170, 13032), (2172, 13020), (2232, 12670), (2480, 11403), (2520, 11222), (2534, 11160), (2604, 10860), (2715, 10416), (2790, 10136), (2896, 9765), (3255, 8688), (3258, 8680), (3472, 8145), (3620, 7812), (3720, 7602), (3801, 7440), (3906, 7240), (4340, 6516), (4344, 6510), (4464, 6335), (5040, 5611), (5068, 5580), (5208, 5430)]