20655360

素因数分解:

$2^8\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{163}}^1$

素因数の和:201

約数の個数: 216

約数和(自身を含む): 78440544

約数和(自身を除く): 57785184

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, 160, 163, 165, 176, 180, 192, 198, 220, 240, 256, 264, 288, 320, 326, 330, 352, 360, 384, 396, 440, 480, 489, 495, 528, 576, 640, 652, 660, 704, 720, 768, 792, 815, 880, 960, 978, 990, 1056, 1152, 1280, 1304, 1320, 1408, 1440, 1467, 1584, 1630, 1760, 1793, 1920, 1956, 1980, 2112, 2304, 2445, 2608, 2640, 2816, 2880, 2934, 3168, 3260, 3520, 3586, 3840, 3912, 3960, 4224, 4890, 5216, 5280, 5379, 5760, 5868, 6336, 6520, 7040, 7172, 7335, 7824, 7920, 8448, 8965, 9780, 10432, 10560, 10758, 11520, 11736, 12672, 13040, 14080, 14344, 14670, 15648, 15840, 16137, 17930, 19560, 20864, 21120, 21516, 23472, 25344, 26080, 26895, 28688, 29340, 31296, 31680, 32274, 35860, 39120, 41728, 42240, 43032, 46944, 52160, 53790, 57376, 58680, 62592, 63360, 64548, 71720, 78240, 80685, 86064, 93888, 104320, 107580, 114752, 117360, 125184, 126720, 129096, 143440, 156480, 161370, 172128, 187776, 208640, 215160, 229504, 234720, 258192, 286880, 312960, 322740, 344256, 375552, 430320, 459008, 469440, 516384, 573760, 625920, 645480, 688512, 860640, 938880, 1032768, 1147520, 1290960, 1377024, 1721280, 1877760, 2065536, 2295040, 2581920, 3442560, 4131072, 5163840, 6885120, 10327680, 20655360]

約数ペア:

[(1, 20655360), (2, 10327680), (3, 6885120), (4, 5163840), (5, 4131072), (6, 3442560), (8, 2581920), (9, 2295040), (10, 2065536), (11, 1877760), (12, 1721280), (15, 1377024), (16, 1290960), (18, 1147520), (20, 1032768), (22, 938880), (24, 860640), (30, 688512), (32, 645480), (33, 625920), (36, 573760), (40, 516384), (44, 469440), (45, 459008), (48, 430320), (55, 375552), (60, 344256), (64, 322740), (66, 312960), (72, 286880), (80, 258192), (88, 234720), (90, 229504), (96, 215160), (99, 208640), (110, 187776), (120, 172128), (128, 161370), (132, 156480), (144, 143440), (160, 129096), (163, 126720), (165, 125184), (176, 117360), (180, 114752), (192, 107580), (198, 104320), (220, 93888), (240, 86064), (256, 80685), (264, 78240), (288, 71720), (320, 64548), (326, 63360), (330, 62592), (352, 58680), (360, 57376), (384, 53790), (396, 52160), (440, 46944), (480, 43032), (489, 42240), (495, 41728), (528, 39120), (576, 35860), (640, 32274), (652, 31680), (660, 31296), (704, 29340), (720, 28688), (768, 26895), (792, 26080), (815, 25344), (880, 23472), (960, 21516), (978, 21120), (990, 20864), (1056, 19560), (1152, 17930), (1280, 16137), (1304, 15840), (1320, 15648), (1408, 14670), (1440, 14344), (1467, 14080), (1584, 13040), (1630, 12672), (1760, 11736), (1793, 11520), (1920, 10758), (1956, 10560), (1980, 10432), (2112, 9780), (2304, 8965), (2445, 8448), (2608, 7920), (2640, 7824), (2816, 7335), (2880, 7172), (2934, 7040), (3168, 6520), (3260, 6336), (3520, 5868), (3586, 5760), (3840, 5379), (3912, 5280), (3960, 5216), (4224, 4890)]