20408640

素因数分解:

$2^6\times 3^1\times 5^1\times 7^1\times {\mathrm{3037}}^1$

素因数の和:3064

約数の個数: 112

約数和(自身を含む): 74078592

約数和(自身を除く): 53669952

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 32, 35, 40, 42, 48, 56, 60, 64, 70, 80, 84, 96, 105, 112, 120, 140, 160, 168, 192, 210, 224, 240, 280, 320, 336, 420, 448, 480, 560, 672, 840, 960, 1120, 1344, 1680, 2240, 3037, 3360, 6074, 6720, 9111, 12148, 15185, 18222, 21259, 24296, 30370, 36444, 42518, 45555, 48592, 60740, 63777, 72888, 85036, 91110, 97184, 106295, 121480, 127554, 145776, 170072, 182220, 194368, 212590, 242960, 255108, 291552, 318885, 340144, 364440, 425180, 485920, 510216, 583104, 637770, 680288, 728880, 850360, 971840, 1020432, 1275540, 1360576, 1457760, 1700720, 2040864, 2551080, 2915520, 3401440, 4081728, 5102160, 6802880, 10204320, 20408640]

約数ペア:

[(1, 20408640), (2, 10204320), (3, 6802880), (4, 5102160), (5, 4081728), (6, 3401440), (7, 2915520), (8, 2551080), (10, 2040864), (12, 1700720), (14, 1457760), (15, 1360576), (16, 1275540), (20, 1020432), (21, 971840), (24, 850360), (28, 728880), (30, 680288), (32, 637770), (35, 583104), (40, 510216), (42, 485920), (48, 425180), (56, 364440), (60, 340144), (64, 318885), (70, 291552), (80, 255108), (84, 242960), (96, 212590), (105, 194368), (112, 182220), (120, 170072), (140, 145776), (160, 127554), (168, 121480), (192, 106295), (210, 97184), (224, 91110), (240, 85036), (280, 72888), (320, 63777), (336, 60740), (420, 48592), (448, 45555), (480, 42518), (560, 36444), (672, 30370), (840, 24296), (960, 21259), (1120, 18222), (1344, 15185), (1680, 12148), (2240, 9111), (3037, 6720), (3360, 6074)]