25599880

素因数分解:

$2^3\times 5^1\times {\mathrm{639997}}^1$

素因数の和:640008

約数の個数: 16

約数和(自身を含む): 57599820

約数和(自身を除く): 31999940

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 639997, 1279994, 2559988, 3199985, 5119976, 6399970, 12799940, 25599880]

約数ペア:

[(1, 25599880), (2, 12799940), (4, 6399970), (5, 5119976), (8, 3199985), (10, 2559988), (20, 1279994), (40, 639997)]