28362880

素因数分解:

$2^7\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{487}}^1$

素因数の和:526

約数の個数: 128

約数和(自身を含む): 83623680

約数和(自身を除く): 55260800

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 16, 20, 26, 28, 32, 35, 40, 52, 56, 64, 65, 70, 80, 91, 104, 112, 128, 130, 140, 160, 182, 208, 224, 260, 280, 320, 364, 416, 448, 455, 487, 520, 560, 640, 728, 832, 896, 910, 974, 1040, 1120, 1456, 1664, 1820, 1948, 2080, 2240, 2435, 2912, 3409, 3640, 3896, 4160, 4480, 4870, 5824, 6331, 6818, 7280, 7792, 8320, 9740, 11648, 12662, 13636, 14560, 15584, 17045, 19480, 25324, 27272, 29120, 31168, 31655, 34090, 38960, 44317, 50648, 54544, 58240, 62336, 63310, 68180, 77920, 88634, 101296, 109088, 126620, 136360, 155840, 177268, 202592, 218176, 221585, 253240, 272720, 311680, 354536, 405184, 436352, 443170, 506480, 545440, 709072, 810368, 886340, 1012960, 1090880, 1418144, 1772680, 2025920, 2181760, 2836288, 3545360, 4051840, 5672576, 7090720, 14181440, 28362880]

約数ペア:

[(1, 28362880), (2, 14181440), (4, 7090720), (5, 5672576), (7, 4051840), (8, 3545360), (10, 2836288), (13, 2181760), (14, 2025920), (16, 1772680), (20, 1418144), (26, 1090880), (28, 1012960), (32, 886340), (35, 810368), (40, 709072), (52, 545440), (56, 506480), (64, 443170), (65, 436352), (70, 405184), (80, 354536), (91, 311680), (104, 272720), (112, 253240), (128, 221585), (130, 218176), (140, 202592), (160, 177268), (182, 155840), (208, 136360), (224, 126620), (260, 109088), (280, 101296), (320, 88634), (364, 77920), (416, 68180), (448, 63310), (455, 62336), (487, 58240), (520, 54544), (560, 50648), (640, 44317), (728, 38960), (832, 34090), (896, 31655), (910, 31168), (974, 29120), (1040, 27272), (1120, 25324), (1456, 19480), (1664, 17045), (1820, 15584), (1948, 14560), (2080, 13636), (2240, 12662), (2435, 11648), (2912, 9740), (3409, 8320), (3640, 7792), (3896, 7280), (4160, 6818), (4480, 6331), (4870, 5824)]