16991613

素因数分解:

$3^4\times {\mathrm{89}}^1\times {\mathrm{2357}}^1$

素因数の和:2458

約数の個数: 20

約数和(自身を含む): 25678620

約数和(自身を除く): 8687007

約数列:

[1, 3, 9, 27, 81, 89, 267, 801, 2357, 2403, 7071, 7209, 21213, 63639, 190917, 209773, 629319, 1887957, 5663871, 16991613]

約数ペア:

[(1, 16991613), (3, 5663871), (9, 1887957), (27, 629319), (81, 209773), (89, 190917), (267, 63639), (801, 21213), (2357, 7209), (2403, 7071)]