20406400

素因数分解:

$2^7\times 5^2\times 7^1\times {\mathrm{911}}^1$

素因数の和:942

約数の個数: 96

約数和(自身を含む): 57674880

約数和(自身を除く): 37268480

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 25, 28, 32, 35, 40, 50, 56, 64, 70, 80, 100, 112, 128, 140, 160, 175, 200, 224, 280, 320, 350, 400, 448, 560, 640, 700, 800, 896, 911, 1120, 1400, 1600, 1822, 2240, 2800, 3200, 3644, 4480, 4555, 5600, 6377, 7288, 9110, 11200, 12754, 14576, 18220, 22400, 22775, 25508, 29152, 31885, 36440, 45550, 51016, 58304, 63770, 72880, 91100, 102032, 116608, 127540, 145760, 159425, 182200, 204064, 255080, 291520, 318850, 364400, 408128, 510160, 583040, 637700, 728800, 816256, 1020320, 1275400, 1457600, 2040640, 2550800, 2915200, 4081280, 5101600, 10203200, 20406400]

約数ペア:

[(1, 20406400), (2, 10203200), (4, 5101600), (5, 4081280), (7, 2915200), (8, 2550800), (10, 2040640), (14, 1457600), (16, 1275400), (20, 1020320), (25, 816256), (28, 728800), (32, 637700), (35, 583040), (40, 510160), (50, 408128), (56, 364400), (64, 318850), (70, 291520), (80, 255080), (100, 204064), (112, 182200), (128, 159425), (140, 145760), (160, 127540), (175, 116608), (200, 102032), (224, 91100), (280, 72880), (320, 63770), (350, 58304), (400, 51016), (448, 45550), (560, 36440), (640, 31885), (700, 29152), (800, 25508), (896, 22775), (911, 22400), (1120, 18220), (1400, 14576), (1600, 12754), (1822, 11200), (2240, 9110), (2800, 7288), (3200, 6377), (3644, 5600), (4480, 4555)]