1806291220

素因数分解:

$2^2\times 5^1\times {\mathrm{90314561}}^1$

素因数の和:90314570

約数の個数: 12

約数和(自身を含む): 3793211604

約数和(自身を除く): 1986920384

約数列:

[1, 2, 4, 5, 10, 20, 90314561, 180629122, 361258244, 451572805, 903145610, 1806291220]

約数ペア:

[(1, 1806291220), (2, 903145610), (4, 451572805), (5, 361258244), (10, 180629122), (20, 90314561)]