20539990

素因数分解:

$2^1\times 5^1\times {\mathrm{769}}^1\times {\mathrm{2671}}^1$

素因数の和:3447

約数の個数: 16

約数和(自身を含む): 37033920

約数和(自身を除く): 16493930

約数列:

[1, 2, 5, 10, 769, 1538, 2671, 3845, 5342, 7690, 13355, 26710, 2053999, 4107998, 10269995, 20539990]

約数ペア:

[(1, 20539990), (2, 10269995), (5, 4107998), (10, 2053999), (769, 26710), (1538, 13355), (2671, 7690), (3845, 5342)]