19989945

素因数分解:

$3^2\times 5^1\times {\mathrm{131}}^1\times {\mathrm{3391}}^1$

素因数の和:3533

約数の個数: 24

約数和(自身を含む): 34924032

約数和(自身を除く): 14934087

約数列:

[1, 3, 5, 9, 15, 45, 131, 393, 655, 1179, 1965, 3391, 5895, 10173, 16955, 30519, 50865, 152595, 444221, 1332663, 2221105, 3997989, 6663315, 19989945]

約数ペア:

[(1, 19989945), (3, 6663315), (5, 3997989), (9, 2221105), (15, 1332663), (45, 444221), (131, 152595), (393, 50865), (655, 30519), (1179, 16955), (1965, 10173), (3391, 5895)]