1990291220

素因数分解:

$2^2\times 5^1\times {\mathrm{99514561}}^1$

素因数の和:99514570

約数の個数: 12

約数和(自身を含む): 4179611604

約数和(自身を除く): 2189320384

約数列:

[1, 2, 4, 5, 10, 20, 99514561, 199029122, 398058244, 497572805, 995145610, 1990291220]

約数ペア:

[(1, 1990291220), (2, 995145610), (4, 497572805), (5, 398058244), (10, 199029122), (20, 99514561)]