20694220

素因数分解:

$2^2\times 5^1\times {\mathrm{809}}^1\times {\mathrm{1279}}^1$

素因数の和:2097

約数の個数: 24

約数和(自身を含む): 43545600

約数和(自身を除く): 22851380

約数列:

[1, 2, 4, 5, 10, 20, 809, 1279, 1618, 2558, 3236, 4045, 5116, 6395, 8090, 12790, 16180, 25580, 1034711, 2069422, 4138844, 5173555, 10347110, 20694220]

約数ペア:

[(1, 20694220), (2, 10347110), (4, 5173555), (5, 4138844), (10, 2069422), (20, 1034711), (809, 25580), (1279, 16180), (1618, 12790), (2558, 8090), (3236, 6395), (4045, 5116)]