20570800

素因数分解:

$2^4\times 5^2\times {\mathrm{51427}}^1$

素因数の和:51445

約数の個数: 30

約数和(自身を含む): 49422308

約数和(自身を除く): 28851508

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 51427, 102854, 205708, 257135, 411416, 514270, 822832, 1028540, 1285675, 2057080, 2571350, 4114160, 5142700, 10285400, 20570800]

約数ペア:

[(1, 20570800), (2, 10285400), (4, 5142700), (5, 4114160), (8, 2571350), (10, 2057080), (16, 1285675), (20, 1028540), (25, 822832), (40, 514270), (50, 411416), (80, 257135), (100, 205708), (200, 102854), (400, 51427)]