20715898

素因数分解:

$2^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{27919}}^1$

素因数の和:27981

約数の個数: 16

約数和(自身を含む): 36184320

約数和(自身を除く): 15468422

約数列:

[1, 2, 7, 14, 53, 106, 371, 742, 27919, 55838, 195433, 390866, 1479707, 2959414, 10357949, 20715898]

約数ペア:

[(1, 20715898), (2, 10357949), (7, 2959414), (14, 1479707), (53, 390866), (106, 195433), (371, 55838), (742, 27919)]