20512781379

素因数分解:

$3^2\times {\mathrm{47}}^1\times {\mathrm{641}}^1\times {\mathrm{75653}}^1$

素因数の和:76347

約数の個数: 24

約数和(自身を含む): 30307597632

約数和(自身を除く): 9794816253

約数列:

[1, 3, 9, 47, 141, 423, 641, 1923, 5769, 30127, 75653, 90381, 226959, 271143, 680877, 3555691, 10667073, 32001219, 48493573, 145480719, 436442157, 2279197931, 6837593793, 20512781379]

約数ペア:

[(1, 20512781379), (3, 6837593793), (9, 2279197931), (47, 436442157), (141, 145480719), (423, 48493573), (641, 32001219), (1923, 10667073), (5769, 3555691), (30127, 680877), (75653, 271143), (90381, 226959)]