21906189

素因数分解:

$3^2\times {\mathrm{23}}^1\times {\mathrm{97}}^1\times {\mathrm{1091}}^1$

素因数の和:1217

約数の個数: 24

約数和(自身を含む): 33388992

約数和(自身を除く): 11482803

約数列:

[1, 3, 9, 23, 69, 97, 207, 291, 873, 1091, 2231, 3273, 6693, 9819, 20079, 25093, 75279, 105827, 225837, 317481, 952443, 2434021, 7302063, 21906189]

約数ペア:

[(1, 21906189), (3, 7302063), (9, 2434021), (23, 952443), (69, 317481), (97, 225837), (207, 105827), (291, 75279), (873, 25093), (1091, 20079), (2231, 9819), (3273, 6693)]