20389208

素因数分解:

$2^3\times 7^1\times {\mathrm{541}}^1\times {\mathrm{673}}^1$

素因数の和:1227

約数の個数: 32

約数和(自身を含む): 43836960

約数和(自身を除く): 23447752

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 541, 673, 1082, 1346, 2164, 2692, 3787, 4328, 4711, 5384, 7574, 9422, 15148, 18844, 30296, 37688, 364093, 728186, 1456372, 2548651, 2912744, 5097302, 10194604, 20389208]

約数ペア:

[(1, 20389208), (2, 10194604), (4, 5097302), (7, 2912744), (8, 2548651), (14, 1456372), (28, 728186), (56, 364093), (541, 37688), (673, 30296), (1082, 18844), (1346, 15148), (2164, 9422), (2692, 7574), (3787, 5384), (4328, 4711)]