20522800

素因数分解:

$2^4\times 5^2\times {\mathrm{51307}}^1$

素因数の和:51325

約数の個数: 30

約数和(自身を含む): 49306988

約数和(自身を除く): 28784188

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 51307, 102614, 205228, 256535, 410456, 513070, 820912, 1026140, 1282675, 2052280, 2565350, 4104560, 5130700, 10261400, 20522800]

約数ペア:

[(1, 20522800), (2, 10261400), (4, 5130700), (5, 4104560), (8, 2565350), (10, 2052280), (16, 1282675), (20, 1026140), (25, 820912), (40, 513070), (50, 410456), (80, 256535), (100, 205228), (200, 102614), (400, 51307)]