20947751

素因数分解:

${\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{67}}^1\times {\mathrm{661}}^1$

素因数の和:782

約数の個数: 16

約数和(自身を含む): 23768448

約数和(自身を除く): 2820697

約数列:

[1, 11, 43, 67, 473, 661, 737, 2881, 7271, 28423, 31691, 44287, 312653, 487157, 1904341, 20947751]

約数ペア:

[(1, 20947751), (11, 1904341), (43, 487157), (67, 312653), (473, 44287), (661, 31691), (737, 28423), (2881, 7271)]