21554780

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{82903}}^1$

素因数の和:82925

約数の個数: 24

約数和(自身を含む): 48747552

約数和(自身を除く): 27192772

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 82903, 165806, 331612, 414515, 829030, 1077739, 1658060, 2155478, 4310956, 5388695, 10777390, 21554780]

約数ペア:

[(1, 21554780), (2, 10777390), (4, 5388695), (5, 4310956), (10, 2155478), (13, 1658060), (20, 1077739), (26, 829030), (52, 414515), (65, 331612), (130, 165806), (260, 82903)]