21116740

素因数分解:

$2^2\times 5^1\times {\mathrm{769}}^1\times {\mathrm{1373}}^1$

素因数の和:2151

約数の個数: 24

約数和(自身を含む): 44435160

約数和(自身を除く): 23318420

約数列:

[1, 2, 4, 5, 10, 20, 769, 1373, 1538, 2746, 3076, 3845, 5492, 6865, 7690, 13730, 15380, 27460, 1055837, 2111674, 4223348, 5279185, 10558370, 21116740]

約数ペア:

[(1, 21116740), (2, 10558370), (4, 5279185), (5, 4223348), (10, 2111674), (20, 1055837), (769, 27460), (1373, 15380), (1538, 13730), (2746, 7690), (3076, 6865), (3845, 5492)]