20556556

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{197}}^1\times {\mathrm{1373}}^1$

素因数の和:1593

約数の個数: 24

約数和(自身を含む): 38087280

約数和(自身を除く): 17530724

約数列:

[1, 2, 4, 19, 38, 76, 197, 394, 788, 1373, 2746, 3743, 5492, 7486, 14972, 26087, 52174, 104348, 270481, 540962, 1081924, 5139139, 10278278, 20556556]

約数ペア:

[(1, 20556556), (2, 10278278), (4, 5139139), (19, 1081924), (38, 540962), (76, 270481), (197, 104348), (394, 52174), (788, 26087), (1373, 14972), (2746, 7486), (3743, 5492)]