25712240

素因数分解:

$2^4\times 5^1\times {\mathrm{321403}}^1$

素因数の和:321416

約数の個数: 20

約数和(自身を含む): 59781144

約数和(自身を除く): 34068904

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 321403, 642806, 1285612, 1607015, 2571224, 3214030, 5142448, 6428060, 12856120, 25712240]

約数ペア:

[(1, 25712240), (2, 12856120), (4, 6428060), (5, 5142448), (8, 3214030), (10, 2571224), (16, 1607015), (20, 1285612), (40, 642806), (80, 321403)]