20820478

素因数分解:

$2^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{87481}}^1$

素因数の和:87507

約数の個数: 16

約数和(自身を含む): 37792224

約数和(自身を除く): 16971746

約数列:

[1, 2, 7, 14, 17, 34, 119, 238, 87481, 174962, 612367, 1224734, 1487177, 2974354, 10410239, 20820478]

約数ペア:

[(1, 20820478), (2, 10410239), (7, 2974354), (14, 1487177), (17, 1224734), (34, 612367), (119, 174962), (238, 87481)]