18881280

素因数分解:

$2^8\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{149}}^1$

素因数の和:187

約数の個数: 216

約数和(自身を含む): 71744400

約数和(自身を除く): 52863120

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 15, 16, 18, 20, 22, 24, 30, 32, 33, 36, 40, 44, 45, 48, 55, 60, 64, 66, 72, 80, 88, 90, 96, 99, 110, 120, 128, 132, 144, 149, 160, 165, 176, 180, 192, 198, 220, 240, 256, 264, 288, 298, 320, 330, 352, 360, 384, 396, 440, 447, 480, 495, 528, 576, 596, 640, 660, 704, 720, 745, 768, 792, 880, 894, 960, 990, 1056, 1152, 1192, 1280, 1320, 1341, 1408, 1440, 1490, 1584, 1639, 1760, 1788, 1920, 1980, 2112, 2235, 2304, 2384, 2640, 2682, 2816, 2880, 2980, 3168, 3278, 3520, 3576, 3840, 3960, 4224, 4470, 4768, 4917, 5280, 5364, 5760, 5960, 6336, 6556, 6705, 7040, 7152, 7920, 8195, 8448, 8940, 9536, 9834, 10560, 10728, 11520, 11920, 12672, 13112, 13410, 14080, 14304, 14751, 15840, 16390, 17880, 19072, 19668, 21120, 21456, 23840, 24585, 25344, 26224, 26820, 28608, 29502, 31680, 32780, 35760, 38144, 39336, 42240, 42912, 47680, 49170, 52448, 53640, 57216, 59004, 63360, 65560, 71520, 73755, 78672, 85824, 95360, 98340, 104896, 107280, 114432, 118008, 126720, 131120, 143040, 147510, 157344, 171648, 190720, 196680, 209792, 214560, 236016, 262240, 286080, 295020, 314688, 343296, 393360, 419584, 429120, 472032, 524480, 572160, 590040, 629376, 786720, 858240, 944064, 1048960, 1180080, 1258752, 1573440, 1716480, 1888128, 2097920, 2360160, 3146880, 3776256, 4720320, 6293760, 9440640, 18881280]

約数ペア:

[(1, 18881280), (2, 9440640), (3, 6293760), (4, 4720320), (5, 3776256), (6, 3146880), (8, 2360160), (9, 2097920), (10, 1888128), (11, 1716480), (12, 1573440), (15, 1258752), (16, 1180080), (18, 1048960), (20, 944064), (22, 858240), (24, 786720), (30, 629376), (32, 590040), (33, 572160), (36, 524480), (40, 472032), (44, 429120), (45, 419584), (48, 393360), (55, 343296), (60, 314688), (64, 295020), (66, 286080), (72, 262240), (80, 236016), (88, 214560), (90, 209792), (96, 196680), (99, 190720), (110, 171648), (120, 157344), (128, 147510), (132, 143040), (144, 131120), (149, 126720), (160, 118008), (165, 114432), (176, 107280), (180, 104896), (192, 98340), (198, 95360), (220, 85824), (240, 78672), (256, 73755), (264, 71520), (288, 65560), (298, 63360), (320, 59004), (330, 57216), (352, 53640), (360, 52448), (384, 49170), (396, 47680), (440, 42912), (447, 42240), (480, 39336), (495, 38144), (528, 35760), (576, 32780), (596, 31680), (640, 29502), (660, 28608), (704, 26820), (720, 26224), (745, 25344), (768, 24585), (792, 23840), (880, 21456), (894, 21120), (960, 19668), (990, 19072), (1056, 17880), (1152, 16390), (1192, 15840), (1280, 14751), (1320, 14304), (1341, 14080), (1408, 13410), (1440, 13112), (1490, 12672), (1584, 11920), (1639, 11520), (1760, 10728), (1788, 10560), (1920, 9834), (1980, 9536), (2112, 8940), (2235, 8448), (2304, 8195), (2384, 7920), (2640, 7152), (2682, 7040), (2816, 6705), (2880, 6556), (2980, 6336), (3168, 5960), (3278, 5760), (3520, 5364), (3576, 5280), (3840, 4917), (3960, 4768), (4224, 4470)]