21330980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{96959}}^1$

素因数の和:96979

約数の個数: 24

約数和(自身を含む): 48867840

約数和(自身を除く): 27536860

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 96959, 193918, 387836, 484795, 969590, 1066549, 1939180, 2133098, 4266196, 5332745, 10665490, 21330980]

約数ペア:

[(1, 21330980), (2, 10665490), (4, 5332745), (5, 4266196), (10, 2133098), (11, 1939180), (20, 1066549), (22, 969590), (44, 484795), (55, 387836), (110, 193918), (220, 96959)]