21640668

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{257627}}^1$

素因数の和:257641

約数の個数: 24

約数和(自身を含む): 57708672

約数和(自身を除く): 36068004

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84, 257627, 515254, 772881, 1030508, 1545762, 1803389, 3091524, 3606778, 5410167, 7213556, 10820334, 21640668]

約数ペア:

[(1, 21640668), (2, 10820334), (3, 7213556), (4, 5410167), (6, 3606778), (7, 3091524), (12, 1803389), (14, 1545762), (21, 1030508), (28, 772881), (42, 515254), (84, 257627)]