20681199

素因数分解:

$3^2\times 7^1\times {\mathrm{11}}^2\times {\mathrm{2713}}^1$

素因数の和:2748

約数の個数: 36

約数和(自身を含む): 37540048

約数和(自身を除く): 16858849

約数列:

[1, 3, 7, 9, 11, 21, 33, 63, 77, 99, 121, 231, 363, 693, 847, 1089, 2541, 2713, 7623, 8139, 18991, 24417, 29843, 56973, 89529, 170919, 208901, 268587, 328273, 626703, 984819, 1880109, 2297911, 2954457, 6893733, 20681199]

約数ペア:

[(1, 20681199), (3, 6893733), (7, 2954457), (9, 2297911), (11, 1880109), (21, 984819), (33, 626703), (63, 328273), (77, 268587), (99, 208901), (121, 170919), (231, 89529), (363, 56973), (693, 29843), (847, 24417), (1089, 18991), (2541, 8139), (2713, 7623)]