27920961

素因数分解:

$3^2\times {\mathrm{47}}^1\times {\mathrm{149}}^1\times {\mathrm{443}}^1$

素因数の和:645

約数の個数: 24

約数和(自身を含む): 41558400

約数和(自身を除く): 13637439

約数列:

[1, 3, 9, 47, 141, 149, 423, 443, 447, 1329, 1341, 3987, 7003, 20821, 21009, 62463, 63027, 66007, 187389, 198021, 594063, 3102329, 9306987, 27920961]

約数ペア:

[(1, 27920961), (3, 9306987), (9, 3102329), (47, 594063), (141, 198021), (149, 187389), (423, 66007), (443, 63027), (447, 62463), (1329, 21009), (1341, 20821), (3987, 7003)]