20897548

素因数分解:

$2^2\times 7^1\times {\mathrm{149}}^1\times {\mathrm{5009}}^1$

素因数の和:5169

約数の個数: 24

約数和(自身を含む): 42084000

約数和(自身を除く): 21186452

約数列:

[1, 2, 4, 7, 14, 28, 149, 298, 596, 1043, 2086, 4172, 5009, 10018, 20036, 35063, 70126, 140252, 746341, 1492682, 2985364, 5224387, 10448774, 20897548]

約数ペア:

[(1, 20897548), (2, 10448774), (4, 5224387), (7, 2985364), (14, 1492682), (28, 746341), (149, 140252), (298, 70126), (596, 35063), (1043, 20036), (2086, 10018), (4172, 5009)]