21639954

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{515237}}^1$

素因数の和:515249

約数の個数: 16

約数和(自身を含む): 49462848

約数和(自身を除く): 27822894

約数列:

[1, 2, 3, 6, 7, 14, 21, 42, 515237, 1030474, 1545711, 3091422, 3606659, 7213318, 10819977, 21639954]

約数ペア:

[(1, 21639954), (2, 10819977), (3, 7213318), (6, 3606659), (7, 3091422), (14, 1545711), (21, 1030474), (42, 515237)]