8402500

素因数分解:

$2^2\times 5^4\times {\mathrm{3361}}^1$

素因数の和:3385

約数の個数: 30

約数和(自身を含む): 18380054

約数和(自身を除く): 9977554

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 125, 250, 500, 625, 1250, 2500, 3361, 6722, 13444, 16805, 33610, 67220, 84025, 168050, 336100, 420125, 840250, 1680500, 2100625, 4201250, 8402500]

約数ペア:

[(1, 8402500), (2, 4201250), (4, 2100625), (5, 1680500), (10, 840250), (20, 420125), (25, 336100), (50, 168050), (100, 84025), (125, 67220), (250, 33610), (500, 16805), (625, 13444), (1250, 6722), (2500, 3361)]