216791680

素因数分解:

$2^7\times 5^1\times 7^2\times {\mathrm{31}}^1\times {\mathrm{223}}^1$

素因数の和:287

約数の個数: 192

約数和(自身を含む): 625121280

約数和(自身を除く): 408329600

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 31, 32, 35, 40, 49, 56, 62, 64, 70, 80, 98, 112, 124, 128, 140, 155, 160, 196, 217, 223, 224, 245, 248, 280, 310, 320, 392, 434, 446, 448, 490, 496, 560, 620, 640, 784, 868, 892, 896, 980, 992, 1085, 1115, 1120, 1240, 1519, 1561, 1568, 1736, 1784, 1960, 1984, 2170, 2230, 2240, 2480, 3038, 3122, 3136, 3472, 3568, 3920, 3968, 4340, 4460, 4480, 4960, 6076, 6244, 6272, 6913, 6944, 7136, 7595, 7805, 7840, 8680, 8920, 9920, 10927, 12152, 12488, 13826, 13888, 14272, 15190, 15610, 15680, 17360, 17840, 19840, 21854, 24304, 24976, 27652, 27776, 28544, 30380, 31220, 31360, 34565, 34720, 35680, 43708, 48391, 48608, 49952, 54635, 55304, 60760, 62440, 69130, 69440, 71360, 87416, 96782, 97216, 99904, 109270, 110608, 121520, 124880, 138260, 138880, 142720, 174832, 193564, 194432, 199808, 218540, 221216, 241955, 243040, 249760, 276520, 338737, 349664, 387128, 437080, 442432, 483910, 486080, 499520, 553040, 677474, 699328, 774256, 874160, 884864, 967820, 972160, 999040, 1106080, 1354948, 1398656, 1548512, 1693685, 1748320, 1935640, 2212160, 2709896, 3097024, 3387370, 3496640, 3871280, 4424320, 5419792, 6194048, 6774740, 6993280, 7742560, 10839584, 13549480, 15485120, 21679168, 27098960, 30970240, 43358336, 54197920, 108395840, 216791680]

約数ペア:

[(1, 216791680), (2, 108395840), (4, 54197920), (5, 43358336), (7, 30970240), (8, 27098960), (10, 21679168), (14, 15485120), (16, 13549480), (20, 10839584), (28, 7742560), (31, 6993280), (32, 6774740), (35, 6194048), (40, 5419792), (49, 4424320), (56, 3871280), (62, 3496640), (64, 3387370), (70, 3097024), (80, 2709896), (98, 2212160), (112, 1935640), (124, 1748320), (128, 1693685), (140, 1548512), (155, 1398656), (160, 1354948), (196, 1106080), (217, 999040), (223, 972160), (224, 967820), (245, 884864), (248, 874160), (280, 774256), (310, 699328), (320, 677474), (392, 553040), (434, 499520), (446, 486080), (448, 483910), (490, 442432), (496, 437080), (560, 387128), (620, 349664), (640, 338737), (784, 276520), (868, 249760), (892, 243040), (896, 241955), (980, 221216), (992, 218540), (1085, 199808), (1115, 194432), (1120, 193564), (1240, 174832), (1519, 142720), (1561, 138880), (1568, 138260), (1736, 124880), (1784, 121520), (1960, 110608), (1984, 109270), (2170, 99904), (2230, 97216), (2240, 96782), (2480, 87416), (3038, 71360), (3122, 69440), (3136, 69130), (3472, 62440), (3568, 60760), (3920, 55304), (3968, 54635), (4340, 49952), (4460, 48608), (4480, 48391), (4960, 43708), (6076, 35680), (6244, 34720), (6272, 34565), (6913, 31360), (6944, 31220), (7136, 30380), (7595, 28544), (7805, 27776), (7840, 27652), (8680, 24976), (8920, 24304), (9920, 21854), (10927, 19840), (12152, 17840), (12488, 17360), (13826, 15680), (13888, 15610), (14272, 15190)]