21682080

素因数分解:

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

素因数の和:273

約数の個数: 240

約数和(自身を含む): 87816960

約数和(自身を除く): 66134880

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 27, 28, 30, 32, 35, 36, 40, 42, 45, 48, 54, 56, 60, 63, 70, 72, 80, 81, 84, 90, 96, 105, 108, 112, 120, 126, 135, 140, 144, 160, 162, 168, 180, 189, 210, 216, 224, 239, 240, 252, 270, 280, 288, 315, 324, 336, 360, 378, 405, 420, 432, 478, 480, 504, 540, 560, 567, 630, 648, 672, 717, 720, 756, 810, 840, 864, 945, 956, 1008, 1080, 1120, 1134, 1195, 1260, 1296, 1434, 1440, 1512, 1620, 1673, 1680, 1890, 1912, 2016, 2151, 2160, 2268, 2390, 2520, 2592, 2835, 2868, 3024, 3240, 3346, 3360, 3585, 3780, 3824, 4302, 4320, 4536, 4780, 5019, 5040, 5670, 5736, 6048, 6453, 6480, 6692, 7170, 7560, 7648, 8365, 8604, 9072, 9560, 10038, 10080, 10755, 11340, 11472, 12906, 12960, 13384, 14340, 15057, 15120, 16730, 17208, 18144, 19120, 19359, 20076, 21510, 22680, 22944, 25095, 25812, 26768, 28680, 30114, 30240, 32265, 33460, 34416, 38240, 38718, 40152, 43020, 45171, 45360, 50190, 51624, 53536, 57360, 60228, 64530, 66920, 68832, 75285, 77436, 80304, 86040, 90342, 90720, 96795, 100380, 103248, 114720, 120456, 129060, 133840, 135513, 150570, 154872, 160608, 172080, 180684, 193590, 200760, 206496, 225855, 240912, 258120, 267680, 271026, 301140, 309744, 344160, 361368, 387180, 401520, 451710, 481824, 516240, 542052, 602280, 619488, 677565, 722736, 774360, 803040, 903420, 1032480, 1084104, 1204560, 1355130, 1445472, 1548720, 1806840, 2168208, 2409120, 2710260, 3097440, 3613680, 4336416, 5420520, 7227360, 10841040, 21682080]

約数ペア:

[(1, 21682080), (2, 10841040), (3, 7227360), (4, 5420520), (5, 4336416), (6, 3613680), (7, 3097440), (8, 2710260), (9, 2409120), (10, 2168208), (12, 1806840), (14, 1548720), (15, 1445472), (16, 1355130), (18, 1204560), (20, 1084104), (21, 1032480), (24, 903420), (27, 803040), (28, 774360), (30, 722736), (32, 677565), (35, 619488), (36, 602280), (40, 542052), (42, 516240), (45, 481824), (48, 451710), (54, 401520), (56, 387180), (60, 361368), (63, 344160), (70, 309744), (72, 301140), (80, 271026), (81, 267680), (84, 258120), (90, 240912), (96, 225855), (105, 206496), (108, 200760), (112, 193590), (120, 180684), (126, 172080), (135, 160608), (140, 154872), (144, 150570), (160, 135513), (162, 133840), (168, 129060), (180, 120456), (189, 114720), (210, 103248), (216, 100380), (224, 96795), (239, 90720), (240, 90342), (252, 86040), (270, 80304), (280, 77436), (288, 75285), (315, 68832), (324, 66920), (336, 64530), (360, 60228), (378, 57360), (405, 53536), (420, 51624), (432, 50190), (478, 45360), (480, 45171), (504, 43020), (540, 40152), (560, 38718), (567, 38240), (630, 34416), (648, 33460), (672, 32265), (717, 30240), (720, 30114), (756, 28680), (810, 26768), (840, 25812), (864, 25095), (945, 22944), (956, 22680), (1008, 21510), (1080, 20076), (1120, 19359), (1134, 19120), (1195, 18144), (1260, 17208), (1296, 16730), (1434, 15120), (1440, 15057), (1512, 14340), (1620, 13384), (1673, 12960), (1680, 12906), (1890, 11472), (1912, 11340), (2016, 10755), (2151, 10080), (2160, 10038), (2268, 9560), (2390, 9072), (2520, 8604), (2592, 8365), (2835, 7648), (2868, 7560), (3024, 7170), (3240, 6692), (3346, 6480), (3360, 6453), (3585, 6048), (3780, 5736), (3824, 5670), (4302, 5040), (4320, 5019), (4536, 4780)]