19385889

素因数分解:

$3^1\times {\mathrm{79}}^1\times {\mathrm{157}}^1\times {\mathrm{521}}^1$

素因数の和:760

約数の個数: 16

約数和(自身を含む): 26392320

約数和(自身を除く): 7006431

約数列:

[1, 3, 79, 157, 237, 471, 521, 1563, 12403, 37209, 41159, 81797, 123477, 245391, 6461963, 19385889]

約数ペア:

[(1, 19385889), (3, 6461963), (79, 245391), (157, 123477), (237, 81797), (471, 41159), (521, 37209), (1563, 12403)]