1285400

素因数分解:

$2^3\times 5^2\times {\mathrm{6427}}^1$

素因数の和:6443

約数の個数: 24

約数和(自身を含む): 2989020

約数和(自身を除く): 1703620

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 200, 6427, 12854, 25708, 32135, 51416, 64270, 128540, 160675, 257080, 321350, 642700, 1285400]

約数ペア:

[(1, 1285400), (2, 642700), (4, 321350), (5, 257080), (8, 160675), (10, 128540), (20, 64270), (25, 51416), (40, 32135), (50, 25708), (100, 12854), (200, 6427)]