19406465

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{9631}}^1$

素因数の和:9680

約数の個数: 16

約数和(自身を含む): 25890816

約数和(自身を除く): 6484351

約数列:

[1, 5, 13, 31, 65, 155, 403, 2015, 9631, 48155, 125203, 298561, 626015, 1492805, 3881293, 19406465]

約数ペア:

[(1, 19406465), (5, 3881293), (13, 1492805), (31, 626015), (65, 298561), (155, 125203), (403, 48155), (2015, 9631)]