20911930

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{160861}}^1$

素因数の和:160881

約数の個数: 16

約数和(自身を含む): 40537224

約数和(自身を除く): 19625294

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 160861, 321722, 804305, 1608610, 2091193, 4182386, 10455965, 20911930]

約数ペア:

[(1, 20911930), (2, 10455965), (5, 4182386), (10, 2091193), (13, 1608610), (26, 804305), (65, 321722), (130, 160861)]