20700800

素因数分解:

$2^7\times 5^2\times {\mathrm{6469}}^1$

素因数の和:6493

約数の個数: 48

約数和(自身を含む): 51145350

約数和(自身を除く): 30444550

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 128, 160, 200, 320, 400, 640, 800, 1600, 3200, 6469, 12938, 25876, 32345, 51752, 64690, 103504, 129380, 161725, 207008, 258760, 323450, 414016, 517520, 646900, 828032, 1035040, 1293800, 2070080, 2587600, 4140160, 5175200, 10350400, 20700800]

約数ペア:

[(1, 20700800), (2, 10350400), (4, 5175200), (5, 4140160), (8, 2587600), (10, 2070080), (16, 1293800), (20, 1035040), (25, 828032), (32, 646900), (40, 517520), (50, 414016), (64, 323450), (80, 258760), (100, 207008), (128, 161725), (160, 129380), (200, 103504), (320, 64690), (400, 51752), (640, 32345), (800, 25876), (1600, 12938), (3200, 6469)]