20865380

素因数分解:

$2^2\times 5^1\times {\mathrm{719}}^1\times {\mathrm{1451}}^1$

素因数の和:2179

約数の個数: 24

約数和(自身を含む): 43908480

約数和(自身を除く): 23043100

約数列:

[1, 2, 4, 5, 10, 20, 719, 1438, 1451, 2876, 2902, 3595, 5804, 7190, 7255, 14380, 14510, 29020, 1043269, 2086538, 4173076, 5216345, 10432690, 20865380]

約数ペア:

[(1, 20865380), (2, 10432690), (4, 5216345), (5, 4173076), (10, 2086538), (20, 1043269), (719, 29020), (1438, 14510), (1451, 14380), (2876, 7255), (2902, 7190), (3595, 5804)]