25978640

素因数分解:

$2^4\times 5^1\times {\mathrm{324733}}^1$

素因数の和:324746

約数の個数: 20

約数和(自身を含む): 60400524

約数和(自身を除く): 34421884

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 324733, 649466, 1298932, 1623665, 2597864, 3247330, 5195728, 6494660, 12989320, 25978640]

約数ペア:

[(1, 25978640), (2, 12989320), (4, 6494660), (5, 5195728), (8, 3247330), (10, 2597864), (16, 1623665), (20, 1298932), (40, 649466), (80, 324733)]