20489788

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{211}}^1\times {\mathrm{2207}}^1$

素因数の和:2433

約数の個数: 24

約数和(自身を含む): 39320064

約数和(自身を除く): 18830276

約数列:

[1, 2, 4, 11, 22, 44, 211, 422, 844, 2207, 2321, 4414, 4642, 8828, 9284, 24277, 48554, 97108, 465677, 931354, 1862708, 5122447, 10244894, 20489788]

約数ペア:

[(1, 20489788), (2, 10244894), (4, 5122447), (11, 1862708), (22, 931354), (44, 465677), (211, 97108), (422, 48554), (844, 24277), (2207, 9284), (2321, 8828), (4414, 4642)]