3988280

素因数分解:

$2^3\times 5^1\times {\mathrm{99707}}^1$

素因数の和:99718

約数の個数: 16

約数和(自身を含む): 8973720

約数和(自身を除く): 4985440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 99707, 199414, 398828, 498535, 797656, 997070, 1994140, 3988280]

約数ペア:

[(1, 3988280), (2, 1994140), (4, 997070), (5, 797656), (8, 498535), (10, 398828), (20, 199414), (40, 99707)]