20980708

素因数分解:

$2^2\times 7^1\times {\mathrm{163}}^1\times {\mathrm{4597}}^1$

素因数の和:4771

約数の個数: 24

約数和(自身を含む): 42228032

約数和(自身を除く): 21247324

約数列:

[1, 2, 4, 7, 14, 28, 163, 326, 652, 1141, 2282, 4564, 4597, 9194, 18388, 32179, 64358, 128716, 749311, 1498622, 2997244, 5245177, 10490354, 20980708]

約数ペア:

[(1, 20980708), (2, 10490354), (4, 5245177), (7, 2997244), (14, 1498622), (28, 749311), (163, 128716), (326, 64358), (652, 32179), (1141, 18388), (2282, 9194), (4564, 4597)]