19886121

素因数分解:

$3^3\times {\mathrm{509}}^1\times {\mathrm{1447}}^1$

素因数の和:1965

約数の個数: 16

約数和(自身を含む): 29539200

約数和(自身を除く): 9653079

約数列:

[1, 3, 9, 27, 509, 1447, 1527, 4341, 4581, 13023, 13743, 39069, 736523, 2209569, 6628707, 19886121]

約数ペア:

[(1, 19886121), (3, 6628707), (9, 2209569), (27, 736523), (509, 39069), (1447, 13743), (1527, 13023), (4341, 4581)]