20871243

素因数分解:

$3^3\times {\mathrm{47}}^1\times {\mathrm{16447}}^1$

素因数の和:16503

約数の個数: 16

約数和(自身を含む): 31580160

約数和(自身を除く): 10708917

約数列:

[1, 3, 9, 27, 47, 141, 423, 1269, 16447, 49341, 148023, 444069, 773009, 2319027, 6957081, 20871243]

約数ペア:

[(1, 20871243), (3, 6957081), (9, 2319027), (27, 773009), (47, 444069), (141, 148023), (423, 49341), (1269, 16447)]