25784225

素因数分解:

$5^2\times {\mathrm{641}}^1\times {\mathrm{1609}}^1$

素因数の和:2260

約数の個数: 12

約数和(自身を含む): 32042220

約数和(自身を除く): 6257995

約数列:

[1, 5, 25, 641, 1609, 3205, 8045, 16025, 40225, 1031369, 5156845, 25784225]

約数ペア:

[(1, 25784225), (5, 5156845), (25, 1031369), (641, 40225), (1609, 16025), (3205, 8045)]