20778660

素因数分解:

$2^2\times 3^3\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{239}}^1$

素因数の和:287

約数の個数: 192

約数和(自身を含む): 77414400

約数和(自身を除く): 56635740

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 23, 27, 28, 30, 35, 36, 42, 45, 46, 54, 60, 63, 69, 70, 84, 90, 92, 105, 108, 115, 126, 135, 138, 140, 161, 180, 189, 207, 210, 230, 239, 252, 270, 276, 315, 322, 345, 378, 414, 420, 460, 478, 483, 540, 621, 630, 644, 690, 717, 756, 805, 828, 945, 956, 966, 1035, 1195, 1242, 1260, 1380, 1434, 1449, 1610, 1673, 1890, 1932, 2070, 2151, 2390, 2415, 2484, 2868, 2898, 3105, 3220, 3346, 3585, 3780, 4140, 4302, 4347, 4780, 4830, 5019, 5497, 5796, 6210, 6453, 6692, 7170, 7245, 8365, 8604, 8694, 9660, 10038, 10755, 10994, 12420, 12906, 14340, 14490, 15057, 16491, 16730, 17388, 20076, 21510, 21735, 21988, 25095, 25812, 27485, 28980, 30114, 32265, 32982, 33460, 38479, 43020, 43470, 45171, 49473, 50190, 54970, 60228, 64530, 65964, 75285, 76958, 82455, 86940, 90342, 98946, 100380, 109940, 115437, 129060, 148419, 150570, 153916, 164910, 180684, 192395, 197892, 225855, 230874, 247365, 296838, 301140, 329820, 346311, 384790, 451710, 461748, 494730, 577185, 593676, 692622, 742095, 769580, 903420, 989460, 1038933, 1154370, 1385244, 1484190, 1731555, 2077866, 2308740, 2968380, 3463110, 4155732, 5194665, 6926220, 10389330, 20778660]

約数ペア:

[(1, 20778660), (2, 10389330), (3, 6926220), (4, 5194665), (5, 4155732), (6, 3463110), (7, 2968380), (9, 2308740), (10, 2077866), (12, 1731555), (14, 1484190), (15, 1385244), (18, 1154370), (20, 1038933), (21, 989460), (23, 903420), (27, 769580), (28, 742095), (30, 692622), (35, 593676), (36, 577185), (42, 494730), (45, 461748), (46, 451710), (54, 384790), (60, 346311), (63, 329820), (69, 301140), (70, 296838), (84, 247365), (90, 230874), (92, 225855), (105, 197892), (108, 192395), (115, 180684), (126, 164910), (135, 153916), (138, 150570), (140, 148419), (161, 129060), (180, 115437), (189, 109940), (207, 100380), (210, 98946), (230, 90342), (239, 86940), (252, 82455), (270, 76958), (276, 75285), (315, 65964), (322, 64530), (345, 60228), (378, 54970), (414, 50190), (420, 49473), (460, 45171), (478, 43470), (483, 43020), (540, 38479), (621, 33460), (630, 32982), (644, 32265), (690, 30114), (717, 28980), (756, 27485), (805, 25812), (828, 25095), (945, 21988), (956, 21735), (966, 21510), (1035, 20076), (1195, 17388), (1242, 16730), (1260, 16491), (1380, 15057), (1434, 14490), (1449, 14340), (1610, 12906), (1673, 12420), (1890, 10994), (1932, 10755), (2070, 10038), (2151, 9660), (2390, 8694), (2415, 8604), (2484, 8365), (2868, 7245), (2898, 7170), (3105, 6692), (3220, 6453), (3346, 6210), (3585, 5796), (3780, 5497), (4140, 5019), (4302, 4830), (4347, 4780)]