20509227

素因数分解:

$3^3\times {\mathrm{19}}^1\times {\mathrm{39979}}^1$

素因数の和:40007

約数の個数: 16

約数和(自身を含む): 31984000

約数和(自身を除く): 11474773

約数列:

[1, 3, 9, 19, 27, 57, 171, 513, 39979, 119937, 359811, 759601, 1079433, 2278803, 6836409, 20509227]

約数ペア:

[(1, 20509227), (3, 6836409), (9, 2278803), (19, 1079433), (27, 759601), (57, 359811), (171, 119937), (513, 39979)]