21815703119

素因数分解:

$7^3\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{77849}}^1$

素因数の和:77932

約数の個数: 32

約数和(自身を含む): 27403200000

約数和(自身を除く): 5587496881

約数列:

[1, 7, 19, 43, 49, 133, 301, 343, 817, 931, 2107, 5719, 6517, 14749, 40033, 77849, 280231, 544943, 1479131, 3347507, 3814601, 10353917, 23432549, 26702207, 63602633, 72477419, 164027843, 445218431, 507341933, 1148194901, 3116529017, 21815703119]

約数ペア:

[(1, 21815703119), (7, 3116529017), (19, 1148194901), (43, 507341933), (49, 445218431), (133, 164027843), (301, 72477419), (343, 63602633), (817, 26702207), (931, 23432549), (2107, 10353917), (5719, 3814601), (6517, 3347507), (14749, 1479131), (40033, 544943), (77849, 280231)]