20920263

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{76631}}^1$

素因数の和:76654

約数の個数: 16

約数和(自身を含む): 34331136

約数和(自身を除く): 13410873

約数列:

[1, 3, 7, 13, 21, 39, 91, 273, 76631, 229893, 536417, 996203, 1609251, 2988609, 6973421, 20920263]

約数ペア:

[(1, 20920263), (3, 6973421), (7, 2988609), (13, 1609251), (21, 996203), (39, 536417), (91, 229893), (273, 76631)]