18891147

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{13313}}^1$

素因数の和:13370

約数の個数: 16

約数和(自身を含む): 28119168

約数和(自身を除く): 9228021

約数列:

[1, 3, 11, 33, 43, 129, 473, 1419, 13313, 39939, 146443, 439329, 572459, 1717377, 6297049, 18891147]

約数ペア:

[(1, 18891147), (3, 6297049), (11, 1717377), (33, 572459), (43, 439329), (129, 146443), (473, 39939), (1419, 13313)]