20477520

素因数分解:

$2^4\times 3^2\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{239}}^1$

素因数の和:282

約数の個数: 240

約数和(自身を含む): 83566080

約数和(自身を除く): 63088560

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 17, 18, 20, 21, 24, 28, 30, 34, 35, 36, 40, 42, 45, 48, 51, 56, 60, 63, 68, 70, 72, 80, 84, 85, 90, 102, 105, 112, 119, 120, 126, 136, 140, 144, 153, 168, 170, 180, 204, 210, 238, 239, 240, 252, 255, 272, 280, 306, 315, 336, 340, 357, 360, 408, 420, 476, 478, 504, 510, 560, 595, 612, 630, 680, 714, 717, 720, 765, 816, 840, 952, 956, 1008, 1020, 1071, 1190, 1195, 1224, 1260, 1360, 1428, 1434, 1530, 1673, 1680, 1785, 1904, 1912, 2040, 2142, 2151, 2380, 2390, 2448, 2520, 2856, 2868, 3060, 3346, 3570, 3585, 3824, 4063, 4080, 4284, 4302, 4760, 4780, 5019, 5040, 5355, 5712, 5736, 6120, 6692, 7140, 7170, 8126, 8365, 8568, 8604, 9520, 9560, 10038, 10710, 10755, 11472, 12189, 12240, 13384, 14280, 14340, 15057, 16252, 16730, 17136, 17208, 19120, 20076, 20315, 21420, 21510, 24378, 25095, 26768, 28441, 28560, 28680, 30114, 32504, 33460, 34416, 36567, 40152, 40630, 42840, 43020, 48756, 50190, 56882, 57360, 60228, 60945, 65008, 66920, 73134, 75285, 80304, 81260, 85323, 85680, 86040, 97512, 100380, 113764, 120456, 121890, 133840, 142205, 146268, 150570, 162520, 170646, 172080, 182835, 195024, 200760, 227528, 240912, 243780, 255969, 284410, 292536, 301140, 325040, 341292, 365670, 401520, 426615, 455056, 487560, 511938, 568820, 585072, 602280, 682584, 731340, 853230, 975120, 1023876, 1137640, 1204560, 1279845, 1365168, 1462680, 1706460, 2047752, 2275280, 2559690, 2925360, 3412920, 4095504, 5119380, 6825840, 10238760, 20477520]

約数ペア:

[(1, 20477520), (2, 10238760), (3, 6825840), (4, 5119380), (5, 4095504), (6, 3412920), (7, 2925360), (8, 2559690), (9, 2275280), (10, 2047752), (12, 1706460), (14, 1462680), (15, 1365168), (16, 1279845), (17, 1204560), (18, 1137640), (20, 1023876), (21, 975120), (24, 853230), (28, 731340), (30, 682584), (34, 602280), (35, 585072), (36, 568820), (40, 511938), (42, 487560), (45, 455056), (48, 426615), (51, 401520), (56, 365670), (60, 341292), (63, 325040), (68, 301140), (70, 292536), (72, 284410), (80, 255969), (84, 243780), (85, 240912), (90, 227528), (102, 200760), (105, 195024), (112, 182835), (119, 172080), (120, 170646), (126, 162520), (136, 150570), (140, 146268), (144, 142205), (153, 133840), (168, 121890), (170, 120456), (180, 113764), (204, 100380), (210, 97512), (238, 86040), (239, 85680), (240, 85323), (252, 81260), (255, 80304), (272, 75285), (280, 73134), (306, 66920), (315, 65008), (336, 60945), (340, 60228), (357, 57360), (360, 56882), (408, 50190), (420, 48756), (476, 43020), (478, 42840), (504, 40630), (510, 40152), (560, 36567), (595, 34416), (612, 33460), (630, 32504), (680, 30114), (714, 28680), (717, 28560), (720, 28441), (765, 26768), (816, 25095), (840, 24378), (952, 21510), (956, 21420), (1008, 20315), (1020, 20076), (1071, 19120), (1190, 17208), (1195, 17136), (1224, 16730), (1260, 16252), (1360, 15057), (1428, 14340), (1434, 14280), (1530, 13384), (1673, 12240), (1680, 12189), (1785, 11472), (1904, 10755), (1912, 10710), (2040, 10038), (2142, 9560), (2151, 9520), (2380, 8604), (2390, 8568), (2448, 8365), (2520, 8126), (2856, 7170), (2868, 7140), (3060, 6692), (3346, 6120), (3570, 5736), (3585, 5712), (3824, 5355), (4063, 5040), (4080, 5019), (4284, 4780), (4302, 4760)]