20191761

素因数分解:

$3^4\times {\mathrm{71}}^1\times {\mathrm{3511}}^1$

素因数の和:3594

約数の個数: 20

約数和(自身を含む): 30596544

約数和(自身を除く): 10404783

約数列:

[1, 3, 9, 27, 71, 81, 213, 639, 1917, 3511, 5751, 10533, 31599, 94797, 249281, 284391, 747843, 2243529, 6730587, 20191761]

約数ペア:

[(1, 20191761), (3, 6730587), (9, 2243529), (27, 747843), (71, 284391), (81, 249281), (213, 94797), (639, 31599), (1917, 10533), (3511, 5751)]