28007199

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{101}}^1\times {\mathrm{2801}}^1$

素因数の和:2919

約数の個数: 24

約数和(自身を含む): 44585424

約数和(自身を除く): 16578225

約数列:

[1, 3, 9, 11, 33, 99, 101, 303, 909, 1111, 2801, 3333, 8403, 9999, 25209, 30811, 92433, 277299, 282901, 848703, 2546109, 3111911, 9335733, 28007199]

約数ペア:

[(1, 28007199), (3, 9335733), (9, 3111911), (11, 2546109), (33, 848703), (99, 282901), (101, 277299), (303, 92433), (909, 30811), (1111, 25209), (2801, 9999), (3333, 8403)]