20828097

素因数分解:

$3^4\times {\mathrm{47}}^1\times {\mathrm{5471}}^1$

素因数の和:5530

約数の個数: 20

約数和(自身を含む): 31781376

約数和(自身を除く): 10953279

約数列:

[1, 3, 9, 27, 47, 81, 141, 423, 1269, 3807, 5471, 16413, 49239, 147717, 257137, 443151, 771411, 2314233, 6942699, 20828097]

約数ペア:

[(1, 20828097), (3, 6942699), (9, 2314233), (27, 771411), (47, 443151), (81, 257137), (141, 147717), (423, 49239), (1269, 16413), (3807, 5471)]