20451220

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{53819}}^1$

素因数の和:53847

約数の個数: 24

約数和(自身を含む): 45208800

約数和(自身を除く): 24757580

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 53819, 107638, 215276, 269095, 538190, 1022561, 1076380, 2045122, 4090244, 5112805, 10225610, 20451220]

約数ペア:

[(1, 20451220), (2, 10225610), (4, 5112805), (5, 4090244), (10, 2045122), (19, 1076380), (20, 1022561), (38, 538190), (76, 269095), (95, 215276), (190, 107638), (380, 53819)]