20643200

素因数分解:

$2^7\times 5^2\times {\mathrm{6451}}^1$

素因数の和:6475

約数の個数: 48

約数和(自身を含む): 51003060

約数和(自身を除く): 30359860

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, 6451, 12902, 25804, 32255, 51608, 64510, 103216, 129020, 161275, 206432, 258040, 322550, 412864, 516080, 645100, 825728, 1032160, 1290200, 2064320, 2580400, 4128640, 5160800, 10321600, 20643200]

約数ペア:

[(1, 20643200), (2, 10321600), (4, 5160800), (5, 4128640), (8, 2580400), (10, 2064320), (16, 1290200), (20, 1032160), (25, 825728), (32, 645100), (40, 516080), (50, 412864), (64, 322550), (80, 258040), (100, 206432), (128, 161275), (160, 129020), (200, 103216), (320, 64510), (400, 51608), (640, 32255), (800, 25804), (1600, 12902), (3200, 6451)]