21388059

素因数分解:

$3^2\times 7^2\times {\mathrm{11}}^1\times {\mathrm{4409}}^1$

素因数の和:4440

約数の個数: 36

約数和(自身を含む): 39213720

約数和(自身を除く): 17825661

約数列:

[1, 3, 7, 9, 11, 21, 33, 49, 63, 77, 99, 147, 231, 441, 539, 693, 1617, 4409, 4851, 13227, 30863, 39681, 48499, 92589, 145497, 216041, 277767, 339493, 436491, 648123, 1018479, 1944369, 2376451, 3055437, 7129353, 21388059]

約数ペア:

[(1, 21388059), (3, 7129353), (7, 3055437), (9, 2376451), (11, 1944369), (21, 1018479), (33, 648123), (49, 436491), (63, 339493), (77, 277767), (99, 216041), (147, 145497), (231, 92589), (441, 48499), (539, 39681), (693, 30863), (1617, 13227), (4409, 4851)]