20528739

素因数分解:

$3^2\times 7^1\times {\mathrm{11}}^2\times {\mathrm{2693}}^1$

素因数の和:2728

約数の個数: 36

約数和(自身を含む): 37263408

約数和(自身を除く): 16734669

約数列:

[1, 3, 7, 9, 11, 21, 33, 63, 77, 99, 121, 231, 363, 693, 847, 1089, 2541, 2693, 7623, 8079, 18851, 24237, 29623, 56553, 88869, 169659, 207361, 266607, 325853, 622083, 977559, 1866249, 2280971, 2932677, 6842913, 20528739]

約数ペア:

[(1, 20528739), (3, 6842913), (7, 2932677), (9, 2280971), (11, 1866249), (21, 977559), (33, 622083), (63, 325853), (77, 266607), (99, 207361), (121, 169659), (231, 88869), (363, 56553), (693, 29623), (847, 24237), (1089, 18851), (2541, 8079), (2693, 7623)]