20652800

素因数分解:

$2^8\times 5^2\times 7^1\times {\mathrm{461}}^1$

素因数の和:494

約数の個数: 108

約数和(自身を含む): 58548336

約数和(自身を除く): 37895536

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, 256, 280, 320, 350, 400, 448, 461, 560, 640, 700, 800, 896, 922, 1120, 1280, 1400, 1600, 1792, 1844, 2240, 2305, 2800, 3200, 3227, 3688, 4480, 4610, 5600, 6400, 6454, 7376, 8960, 9220, 11200, 11525, 12908, 14752, 16135, 18440, 22400, 23050, 25816, 29504, 32270, 36880, 44800, 46100, 51632, 59008, 64540, 73760, 80675, 92200, 103264, 118016, 129080, 147520, 161350, 184400, 206528, 258160, 295040, 322700, 368800, 413056, 516320, 590080, 645400, 737600, 826112, 1032640, 1290800, 1475200, 2065280, 2581600, 2950400, 4130560, 5163200, 10326400, 20652800]

約数ペア:

[(1, 20652800), (2, 10326400), (4, 5163200), (5, 4130560), (7, 2950400), (8, 2581600), (10, 2065280), (14, 1475200), (16, 1290800), (20, 1032640), (25, 826112), (28, 737600), (32, 645400), (35, 590080), (40, 516320), (50, 413056), (56, 368800), (64, 322700), (70, 295040), (80, 258160), (100, 206528), (112, 184400), (128, 161350), (140, 147520), (160, 129080), (175, 118016), (200, 103264), (224, 92200), (256, 80675), (280, 73760), (320, 64540), (350, 59008), (400, 51632), (448, 46100), (461, 44800), (560, 36880), (640, 32270), (700, 29504), (800, 25816), (896, 23050), (922, 22400), (1120, 18440), (1280, 16135), (1400, 14752), (1600, 12908), (1792, 11525), (1844, 11200), (2240, 9220), (2305, 8960), (2800, 7376), (3200, 6454), (3227, 6400), (3688, 5600), (4480, 4610)]