25809620

素因数分解:

$2^2\times 5^1\times {\mathrm{131}}^1\times {\mathrm{9851}}^1$

素因数の和:9991

約数の個数: 24

約数和(自身を含む): 54619488

約数和(自身を除く): 28809868

約数列:

[1, 2, 4, 5, 10, 20, 131, 262, 524, 655, 1310, 2620, 9851, 19702, 39404, 49255, 98510, 197020, 1290481, 2580962, 5161924, 6452405, 12904810, 25809620]

約数ペア:

[(1, 25809620), (2, 12904810), (4, 6452405), (5, 5161924), (10, 2580962), (20, 1290481), (131, 197020), (262, 98510), (524, 49255), (655, 39404), (1310, 19702), (2620, 9851)]