20749761

素因数分解:

$3^2\times {\mathrm{29}}^1\times {\mathrm{107}}^1\times {\mathrm{743}}^1$

素因数の和:885

約数の個数: 24

約数和(自身を含む): 31337280

約数和(自身を除く): 10587519

約数列:

[1, 3, 9, 29, 87, 107, 261, 321, 743, 963, 2229, 3103, 6687, 9309, 21547, 27927, 64641, 79501, 193923, 238503, 715509, 2305529, 6916587, 20749761]

約数ペア:

[(1, 20749761), (3, 6916587), (9, 2305529), (29, 715509), (87, 238503), (107, 193923), (261, 79501), (321, 64641), (743, 27927), (963, 21547), (2229, 9309), (3103, 6687)]