856947

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{73}}^1$

素因数の和:139

約数の個数: 32

約数和(自身を含む): 1458688

約数和(自身を除く): 601741

約数列:

[1, 3, 7, 13, 21, 39, 43, 73, 91, 129, 219, 273, 301, 511, 559, 903, 949, 1533, 1677, 2847, 3139, 3913, 6643, 9417, 11739, 19929, 21973, 40807, 65919, 122421, 285649, 856947]

約数ペア:

[(1, 856947), (3, 285649), (7, 122421), (13, 65919), (21, 40807), (39, 21973), (43, 19929), (73, 11739), (91, 9417), (129, 6643), (219, 3913), (273, 3139), (301, 2847), (511, 1677), (559, 1533), (903, 949)]