19380520

素因数分解:

$2^3\times 5^1\times {\mathrm{661}}^1\times {\mathrm{733}}^1$

素因数の和:1405

約数の個数: 32

約数和(自身を含む): 43731720

約数和(自身を除く): 24351200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 661, 733, 1322, 1466, 2644, 2932, 3305, 3665, 5288, 5864, 6610, 7330, 13220, 14660, 26440, 29320, 484513, 969026, 1938052, 2422565, 3876104, 4845130, 9690260, 19380520]

約数ペア:

[(1, 19380520), (2, 9690260), (4, 4845130), (5, 3876104), (8, 2422565), (10, 1938052), (20, 969026), (40, 484513), (661, 29320), (733, 26440), (1322, 14660), (1466, 13220), (2644, 7330), (2932, 6610), (3305, 5864), (3665, 5288)]