25778180

素因数分解:

$2^2\times 5^1\times {\mathrm{131}}^1\times {\mathrm{9839}}^1$

素因数の和:9979

約数の個数: 24

約数和(自身を含む): 54552960

約数和(自身を除く): 28774780

約数列:

[1, 2, 4, 5, 10, 20, 131, 262, 524, 655, 1310, 2620, 9839, 19678, 39356, 49195, 98390, 196780, 1288909, 2577818, 5155636, 6444545, 12889090, 25778180]

約数ペア:

[(1, 25778180), (2, 12889090), (4, 6444545), (5, 5155636), (10, 2577818), (20, 1288909), (131, 196780), (262, 98390), (524, 49195), (655, 39356), (1310, 19678), (2620, 9839)]