20528949

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{2237}}^1$

素因数の和:2289

約数の個数: 32

約数和(自身を含む): 34375680

約数和(自身を除く): 13846731

約数列:

[1, 3, 7, 19, 21, 23, 57, 69, 133, 161, 399, 437, 483, 1311, 2237, 3059, 6711, 9177, 15659, 42503, 46977, 51451, 127509, 154353, 297521, 360157, 892563, 977569, 1080471, 2932707, 6842983, 20528949]

約数ペア:

[(1, 20528949), (3, 6842983), (7, 2932707), (19, 1080471), (21, 977569), (23, 892563), (57, 360157), (69, 297521), (133, 154353), (161, 127509), (399, 51451), (437, 46977), (483, 42503), (1311, 15659), (2237, 9177), (3059, 6711)]