19765539

素因数分解:

$3^4\times {\mathrm{239}}^1\times {\mathrm{1021}}^1$

素因数の和:1272

約数の個数: 20

約数和(自身を含む): 29678880

約数和(自身を除く): 9913341

約数列:

[1, 3, 9, 27, 81, 239, 717, 1021, 2151, 3063, 6453, 9189, 19359, 27567, 82701, 244019, 732057, 2196171, 6588513, 19765539]

約数ペア:

[(1, 19765539), (3, 6588513), (9, 2196171), (27, 732057), (81, 244019), (239, 82701), (717, 27567), (1021, 19359), (2151, 9189), (3063, 6453)]