19920355

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{43781}}^1$

素因数の和:43806

約数の個数: 16

約数和(自身を含む): 29421504

約数和(自身を除く): 9501149

約数列:

[1, 5, 7, 13, 35, 65, 91, 455, 43781, 218905, 306467, 569153, 1532335, 2845765, 3984071, 19920355]

約数ペア:

[(1, 19920355), (5, 3984071), (7, 2845765), (13, 1532335), (35, 569153), (65, 306467), (91, 218905), (455, 43781)]