20988280

素因数分解:

$2^3\times 5^1\times {\mathrm{524707}}^1$

素因数の和:524718

約数の個数: 16

約数和(自身を含む): 47223720

約数和(自身を除く): 26235440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 524707, 1049414, 2098828, 2623535, 4197656, 5247070, 10494140, 20988280]

約数ペア:

[(1, 20988280), (2, 10494140), (4, 5247070), (5, 4197656), (8, 2623535), (10, 2098828), (20, 1049414), (40, 524707)]