20280821

素因数分解:

${\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1\times {\mathrm{809}}^1$

素因数の和:916

約数の個数: 16

約数和(自身を含む): 23094720

約数和(自身を除く): 2813899

約数列:

[1, 11, 43, 53, 473, 583, 809, 2279, 8899, 25069, 34787, 42877, 382657, 471647, 1843711, 20280821]

約数ペア:

[(1, 20280821), (11, 1843711), (43, 471647), (53, 382657), (473, 42877), (583, 34787), (809, 25069), (2279, 8899)]