28116921

素因数分解:

$3^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{137}}^1\times {\mathrm{337}}^1$

素因数の和:513

約数の個数: 32

約数和(自身を含む): 44778240

約数和(自身を除く): 16661319

約数列:

[1, 3, 7, 21, 29, 87, 137, 203, 337, 411, 609, 959, 1011, 2359, 2877, 3973, 7077, 9773, 11919, 27811, 29319, 46169, 68411, 83433, 138507, 205233, 323183, 969549, 1338901, 4016703, 9372307, 28116921]

約数ペア:

[(1, 28116921), (3, 9372307), (7, 4016703), (21, 1338901), (29, 969549), (87, 323183), (137, 205233), (203, 138507), (337, 83433), (411, 68411), (609, 46169), (959, 29319), (1011, 27811), (2359, 11919), (2877, 9773), (3973, 7077)]