20808007516

素因数分解:

$2^2\times {\mathrm{409}}^1\times {\mathrm{421}}^1\times {\mathrm{30211}}^1$

素因数の和:31045

約数の個数: 24

約数和(自身を含む): 36590961680

約数和(自身を除く): 15782954164

約数列:

[1, 2, 4, 409, 421, 818, 842, 1636, 1684, 30211, 60422, 120844, 172189, 344378, 688756, 12356299, 12718831, 24712598, 25437662, 49425196, 50875324, 5202001879, 10404003758, 20808007516]

約数ペア:

[(1, 20808007516), (2, 10404003758), (4, 5202001879), (409, 50875324), (421, 49425196), (818, 25437662), (842, 24712598), (1636, 12718831), (1684, 12356299), (30211, 688756), (60422, 344378), (120844, 172189)]