20288680

素因数分解:

$2^3\times 5^1\times {\mathrm{507217}}^1$

素因数の和:507228

約数の個数: 16

約数和(自身を含む): 45649620

約数和(自身を除く): 25360940

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 507217, 1014434, 2028868, 2536085, 4057736, 5072170, 10144340, 20288680]

約数ペア:

[(1, 20288680), (2, 10144340), (4, 5072170), (5, 4057736), (8, 2536085), (10, 2028868), (20, 1014434), (40, 507217)]