20521580

素因数分解:

$2^2\times 5^1\times {\mathrm{347}}^1\times {\mathrm{2957}}^1$

素因数の和:3313

約数の個数: 24

約数和(自身を含む): 43234128

約数和(自身を除く): 22712548

約数列:

[1, 2, 4, 5, 10, 20, 347, 694, 1388, 1735, 2957, 3470, 5914, 6940, 11828, 14785, 29570, 59140, 1026079, 2052158, 4104316, 5130395, 10260790, 20521580]

約数ペア:

[(1, 20521580), (2, 10260790), (4, 5130395), (5, 4104316), (10, 2052158), (20, 1026079), (347, 59140), (694, 29570), (1388, 14785), (1735, 11828), (2957, 6940), (3470, 5914)]