20787522

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{6971}}^1$

素因数の和:7054

約数の個数: 32

約数和(自身を含む): 48190464

約数和(自身を除く): 27402942

約数列:

[1, 2, 3, 6, 7, 14, 21, 42, 71, 142, 213, 426, 497, 994, 1491, 2982, 6971, 13942, 20913, 41826, 48797, 97594, 146391, 292782, 494941, 989882, 1484823, 2969646, 3464587, 6929174, 10393761, 20787522]

約数ペア:

[(1, 20787522), (2, 10393761), (3, 6929174), (6, 3464587), (7, 2969646), (14, 1484823), (21, 989882), (42, 494941), (71, 292782), (142, 146391), (213, 97594), (426, 48797), (497, 41826), (994, 20913), (1491, 13942), (2982, 6971)]