20904790

素因数分解:

$2^1\times 5^1\times {\mathrm{53}}^1\times {\mathrm{39443}}^1$

素因数の和:39503

約数の個数: 16

約数和(自身を含む): 38339568

約数和(自身を除く): 17434778

約数列:

[1, 2, 5, 10, 53, 106, 265, 530, 39443, 78886, 197215, 394430, 2090479, 4180958, 10452395, 20904790]

約数ペア:

[(1, 20904790), (2, 10452395), (5, 4180958), (10, 2090479), (53, 394430), (106, 197215), (265, 78886), (530, 39443)]