19916267

素因数分解:

$7^1\times {\mathrm{43}}^1\times {\mathrm{127}}^1\times {\mathrm{521}}^1$

素因数の和:698

約数の個数: 16

約数和(自身を含む): 23519232

約数和(自身を除く): 3602965

約数列:

[1, 7, 43, 127, 301, 521, 889, 3647, 5461, 22403, 38227, 66167, 156821, 463169, 2845181, 19916267]

約数ペア:

[(1, 19916267), (7, 2845181), (43, 463169), (127, 156821), (301, 66167), (521, 38227), (889, 22403), (3647, 5461)]