21875280

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{449}}^1$

素因数の和:501

約数の個数: 160

約数和(自身を含む): 80352000

約数和(自身を除く): 58476720

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 29, 30, 35, 40, 42, 48, 56, 58, 60, 70, 80, 84, 87, 105, 112, 116, 120, 140, 145, 168, 174, 203, 210, 232, 240, 280, 290, 336, 348, 406, 420, 435, 449, 464, 560, 580, 609, 696, 812, 840, 870, 898, 1015, 1160, 1218, 1347, 1392, 1624, 1680, 1740, 1796, 2030, 2245, 2320, 2436, 2694, 3045, 3143, 3248, 3480, 3592, 4060, 4490, 4872, 5388, 6090, 6286, 6735, 6960, 7184, 8120, 8980, 9429, 9744, 10776, 12180, 12572, 13021, 13470, 15715, 16240, 17960, 18858, 21552, 24360, 25144, 26042, 26940, 31430, 35920, 37716, 39063, 47145, 48720, 50288, 52084, 53880, 62860, 65105, 75432, 78126, 91147, 94290, 104168, 107760, 125720, 130210, 150864, 156252, 182294, 188580, 195315, 208336, 251440, 260420, 273441, 312504, 364588, 377160, 390630, 455735, 520840, 546882, 625008, 729176, 754320, 781260, 911470, 1041680, 1093764, 1367205, 1458352, 1562520, 1822940, 2187528, 2734410, 3125040, 3645880, 4375056, 5468820, 7291760, 10937640, 21875280]

約数ペア:

[(1, 21875280), (2, 10937640), (3, 7291760), (4, 5468820), (5, 4375056), (6, 3645880), (7, 3125040), (8, 2734410), (10, 2187528), (12, 1822940), (14, 1562520), (15, 1458352), (16, 1367205), (20, 1093764), (21, 1041680), (24, 911470), (28, 781260), (29, 754320), (30, 729176), (35, 625008), (40, 546882), (42, 520840), (48, 455735), (56, 390630), (58, 377160), (60, 364588), (70, 312504), (80, 273441), (84, 260420), (87, 251440), (105, 208336), (112, 195315), (116, 188580), (120, 182294), (140, 156252), (145, 150864), (168, 130210), (174, 125720), (203, 107760), (210, 104168), (232, 94290), (240, 91147), (280, 78126), (290, 75432), (336, 65105), (348, 62860), (406, 53880), (420, 52084), (435, 50288), (449, 48720), (464, 47145), (560, 39063), (580, 37716), (609, 35920), (696, 31430), (812, 26940), (840, 26042), (870, 25144), (898, 24360), (1015, 21552), (1160, 18858), (1218, 17960), (1347, 16240), (1392, 15715), (1624, 13470), (1680, 13021), (1740, 12572), (1796, 12180), (2030, 10776), (2245, 9744), (2320, 9429), (2436, 8980), (2694, 8120), (3045, 7184), (3143, 6960), (3248, 6735), (3480, 6286), (3592, 6090), (4060, 5388), (4490, 4872)]