20110821

素因数分解:

$3^1\times {\mathrm{71}}^1\times {\mathrm{263}}^1\times {\mathrm{359}}^1$

素因数の和:696

約数の個数: 16

約数和(自身を含む): 27371520

約数和(自身を除く): 7260699

約数列:

[1, 3, 71, 213, 263, 359, 789, 1077, 18673, 25489, 56019, 76467, 94417, 283251, 6703607, 20110821]

約数ペア:

[(1, 20110821), (3, 6703607), (71, 283251), (213, 94417), (263, 76467), (359, 56019), (789, 25489), (1077, 18673)]